7th Class Science Time and Motion Question Bank

done Motion and Time Total Questions - 40

• question_answer1)
  A pendulum takes 0.5 s to make one oscillation about its mean position. How long will it take to make 5 oscillations?
  A)
   5 s                                          done clear
  B)
   7.5 s                      done clear
  C)
          2.5s                       done clear
  D)
          10s done clear
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• question_answer2)
  Which of the following are NOT in uniform motion?

  (i) A bullet travelling with a constant  speed in a straight line

  (ii) A Swinging pendulum

  (iii) The rotation of earth

  A)
   Only (i) and (ii) done clear
  B)
   Only (ii) and (iii) done clear
  C)
   Only (i) and (iii) done clear
  D)
   (i), (ii) and iii done clear
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• question_answer3)
  Sunitha can type 1800 words in half an hour. What is her typing speed in words per minute?
  A)
   60                                          done clear
  B)
   600                        done clear
  C)
   50                          done clear
  D)
          3000 done clear
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• question_answer4)
  A truck travels 840 km using 60 litres of diesel. What is the fuel consumption of the truck?
  A)
   14 km per litre done clear
  B)
   14 litre per km done clear
  C)
          140 km per litre done clear
  D)
          140 litre per kr done clear
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• question_answer5)
  A water pipe has water flowing through it. Which of the following changes would increase the speed of water flow through the pipe?
  A)
                   Increase the water pressure                 done clear
  B)
                   Increase the length of pipe                 done clear
  C)
                   Make the pipe coiled                 done clear
  D)
                   Make the pipe narrower done clear
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• question_answer6)
  Which of the following does NOT show oscillatory motion?
  A)
   Swing                                   done clear
  B)
   Fan                        done clear
  C)
   See-saw              done clear
  D)
          Pendulum                          done clear
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• question_answer7)
  A train starts from station A and reaches station D which is 150 km away. It has scheduled halts at station B and C for 5 minutes each. The distance between A and B is 50 km and C and D is 60 km. The train starts at 5 p.m. from A and reaches D at 8.30 p.m. What is its average speed in\[m\,{{s}^{-1}}?\]
  A)
  \[11.88\,m\,{{s}^{-1}}\]                 done clear
  B)
  \[15.4\,m\,{{s}^{-1}}\]   done clear
  C)
         \[8.41\text{ }m\text{ }{{s}^{-1}}\]       done clear
  D)
         \[5.83\text{ }m\text{ }{{s}^{-1}}\]                            done clear
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• question_answer8)
  A man runs 10 km in 30 min. What is his speed per hour?
  A)
  \[5\,km\,{{h}^{-1}}\]                      done clear
  B)
         \[10\,km\,{{h}^{-1}}\]    done clear
  C)
         \[15\,km\,{{h}^{-1}}\]                    done clear
  D)
          \[20\text{ }km\text{ }{{h}^{-1}}\]                            done clear
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• question_answer9)
  Study the graph given below. What can be concluded about the speed in the above graph?                
  A)
                                           It goes on increasing.                 done clear
  B)
                   It decreases first and then becomes zero.                 done clear
  C)
   It increases first and then becomes constant but not zero. done clear
  D)
   It decreases first and then becomes constant but not zero. done clear
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• question_answer10)
  With what speed should a car travel so that it can cover a distance of 5 km in 5 min?
  A)
  \[1\text{ }km\text{ }{{h}^{-1}}\]                               done clear
  B)
  \[5\text{ }km\text{ }{{h}^{-1}}\]               done clear
  C)
         \[12\,km\,{{h}^{-1}}\]                    done clear
  D)
         \[~60\text{ }km\text{ }{{h}^{-1}}\]                          done clear
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• question_answer11)
  A car travels with a speed of \[50\,km\,{{h}^{-1}}\]in the 1st hour and \[100\,km\,{{h}^{-1}}\] in the 2nd hour. What is the total distance covered by the car in the two hours?
  A)
   50km                                    done clear
  B)
   100km  done clear
  C)
          150 km                 done clear
  D)
          200 km                 done clear
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• question_answer12)
  A graph is shown below. What does the area of the shaded portion in the graph represent?
  A)
   Distance                              done clear
  B)
   Speed  done clear
  C)
          Time                     done clear
  D)
          Uniform motion                              done clear
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• question_answer13)
  Which of the following relations is correct?
  A)
   \[\text{Speed}\,\text{=}\,\frac{\text{1}}{\text{Distance}\,\,\text{ }\!\!\times\!\!\text{ }\,\text{Time}}\] done clear
  B)
   \[\text{Speed}\,\text{=}\,\frac{\text{Time}}{\text{Distance}}\] done clear
  C)
   \[\text{Speed}\,\text{=}\,\,\frac{\text{Distnce}}{\text{Time}}\] done clear
  D)
   Speed = Distance \[\times \] Time done clear
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• question_answer14)
  Which of the following is the most suitable device for measuring the time the runners take in a 100 m marathon?                        
  A)
   Hourglass                           done clear
  B)
   Stopwatch         done clear
  C)
          Pendulum          done clear
  D)
          Sun dial                               done clear
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• question_answer15)
  In a marathon, Varun runs 800 metres in 2 minutes 40 seconds. What is his speed in metres per second?
  A)
  \[4\,m\,{{s}^{-1}}\]                         done clear
  B)
  \[5\,m\,{{s}^{-1}}\]         done clear
  C)
         \[200\,m\,{{s}^{-1}}\]                    done clear
  D)
         \[1600\,m\,{{s}^{-1}}\] done clear
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• question_answer16)
  Which of the following shows motion in a straight line?
  A)
   A bullet shot from a gun done clear
  B)
   A tree swaying done clear
  C)
   Child on a merry-go-round done clear
  D)
   The motion of strings in a guitar done clear
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• question_answer17)
  Which of the following is given incorrectly
  A)
   Speedometer   : Speed done clear
  B)
   Odometer          : Odour done clear
  C)
   Anemometer   : Wind speed done clear
  D)
   Stopwatch         : Time done clear
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• question_answer18)
  A body moves on a circular track covering one complete round of 60 m in 10 seconds. Find its average speed.
  A)
  \[~3\text{ }m\text{ }{{s}^{-1}}\]                                done clear
  B)
  \[6\text{ }m\text{ }{{s}^{-1}}\]  done clear
  C)
         \[36\text{ }m\text{ }{{s}^{-1}}\]         done clear
  D)
         \[600\text{ }m\text{ }{{s}^{-1}}\]                              done clear
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• question_answer19)
  Which of the following travels the fastest?
  A)
   Cheetah                              done clear
  B)
   Wind    done clear
  C)
          Sound                  done clear
  D)
          Light done clear
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• question_answer20)
  A person is seated in a train under motion. With reference to which of the following surroundings is he at rest?
  A)
   Person watching him from the front seat done clear
  B)
   Person watching him from the ground done clear
  C)
   Trees on the ground done clear
  D)
   A car moving in the opposite direction to the train done clear
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• question_answer21)
  Study the given distance-time graph for three cars P, Q and R in a race. Which of the three cars win the race?
  A)
   Car P                     done clear
  B)
   Car Q    done clear
  C)
   Car R                     done clear
  D)
   Both Q and R     done clear
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• question_answer22)
          The speed of a train is \[20\,m\,{{s}^{-1}}.\]What is the speed in km\[km\,{{h}^{-1}}?\]
  A)
  \[60\text{ }km\text{ }{{h}^{-1}}\]             done clear
  B)
  \[40\text{ }km\text{ }{{h}^{-1}}\]             done clear
  C)
         \[~72\text{ }km\text{ }{{h}^{-1}}\]      done clear
  D)
         \[20\text{ }km\text{ }{{h}^{-1}}\]                             done clear
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• question_answer23)
  A spin drier spins at a rate of 600 revolutions per minute. How many revolutions would it make in 1 minute 20 seconds?
  A)
   600                                        done clear
  B)
   800                        done clear
  C)
   900                        done clear
  D)
          1000 done clear
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• question_answer24)
  A cyclist travels at an average speed of \[25\,km\,{{h}^{-1}}.\] How long will it take for him to travel a triangular journey through three places \[{{P}_{1}},{{P}_{2}}\]and\[{{P}_{3}}\] as shown in the figure?  
  A)
   20 minutes         done clear
  B)
   36 minutes         done clear
  C)
          1 hour                  done clear
  D)
          1 hour 20 minutes done clear
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• question_answer25)
  A car covered a distance of 3 km in 5 minutes. What is the speed with which the car travelled?

  (i) \[100\,m{{s}^{-1}}\]

  (ii)\[136\,km\,\,{{h}^{-1}}\]

  (iii)\[1000\,cm\,\,{{s}^{-1}}\]

  (iv) \[600\,m\,\,{{\min }^{-1}}\]

  A)
   Only (i) and (ii) done clear
  B)
                   Only (ii) and (iii) done clear
  C)
                   Only (i), (iii) and (iv) done clear
  D)
                   Only (ii), (iii) and (iv) done clear
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• question_answer26)

  Duration (in hour)	0-6	6-8	8-16	16-20
  Distance covered (in km)	400	0	600	200

  What is the average speed of the journey for the first 20 hours?
  A)
  \[75\text{ }km\text{ }{{h}^{-1}}\]                             done clear
  B)
  \[~50\text{ }km\text{ }{{h}^{-1}}\]          done clear
  C)
         \[60\text{ }km\text{ }{{h}^{-1}}\]      done clear
  D)
         \[~66.67\text{ }km\text{ }{{h}^{-1}}\]    done clear
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• question_answer27)
  Study the data given below.

  Duration (in hour)	6-8	6-8
  Distance covered (in km)	?	240

  If the average speed of the journey is \[80\,km\,{{h}^{-1}},\] what is the distance travelled during the first 8 hours?
  A)
   640 km                                 done clear
  B)
   240 km done clear
  C)
          400 km                 done clear
  D)
          480 km done clear
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• question_answer28)
  In a 100 m race Revanth and Rohan ran at an average speed of \[8.4\,m\,{{s}^{-1}}\]and \[12.2\,m\,{{s}^{-1}}\]respectively. If 12 seconds is the time taken in school records for 100 metre race, then which of the following can be true?
  A)
   Revanth broke the record. done clear
  B)
   Rohan broke the record. done clear
  C)
   Both Revanth and Rohan broke the record. done clear
  D)
   Neither Revanth nor Rohan broke the record. done clear
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• question_answer29)
  Swapna travelled by plane flying at an average speed of \[600\,km\,{{h}^{-1}}.\]The plane left the airport at 13:00 h and reached the destination at 15:45 h. How far did Swapna travel?
  A)
   1350 km                              done clear
  B)
   1200 km              done clear
  C)
          1650 km              done clear
  D)
          1800 km done clear
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• question_answer30)
  Kiran and Sharan start from their home at the same time but travel by different routes to reach their school. Kiran's house is at a distance of 1500 m from school while Sharan's house is 2000 m from school. If both reach school at the same time, what can be inferred?
  A)
   Kiran's speed is greater than Sharan's. done clear
  B)
   Sharan's speed is greater than Kiran's. done clear
  C)
   Sharan travels with a speed of \[75\,m\,{{\min }^{-1}}\] done clear
  D)
   Kiran travels with a speed of \[100\,m\,{{\min }^{-1}}\] done clear
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• question_answer31)
  The graph given below shows the motion of four runners P, Q, R and S in a 5 km marathon. Who ran the fastest?
  A)
   P                                            done clear
  B)
   Q                            done clear
  C)
   R                            done clear
  D)
          S done clear
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• question_answer32)
  Which of the following graphs represents constant speed of a body?
  A)
                                  done clear
  B)
  done clear
  C)
                                                   done clear
  D)
  done clear
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• question_answer33)
  Riaz takes 20 minutes to reach his school with a speed of \[3\,m\,{{s}^{-1}}.\] How far is his school from home?
  A)
   2 km                                     done clear
  B)
   3.2 km                  done clear
  C)
   3.6 km                  done clear
  D)
          4.1 km  done clear
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• question_answer34)
          With what speed should a car travel so that it can cover a distance of 10 km in 5 minutes?
  A)
  \[10\,km\,{{h}^{-1}}\]                                    done clear
  B)
  \[~50\text{ }km\text{ }{{h}^{-1}}\]          done clear
  C)
         \[~60\text{ }km\text{ }{{h}^{-1}}\]      done clear
  D)
         \[120\,km\,{{h}^{-1}}\] done clear
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• question_answer35)
  According to the following graph, what happens to the distance covered by a car moving on a straight road from 0 to 10 minutes?                
  A)
                                           It goes on increasing.                 done clear
  B)
                   It goes on decreasing.                 done clear
  C)
                   It first increases and then decreases.                 done clear
  D)
                   It first decreases and then increases. done clear
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• question_answer36)
  A car travels with a speed of \[50\,km\,{{h}^{-1}}\] in the 1st 30 minutes and \[100\,km\,{{h}^{-1}}\] in the next 30 minutes. What is the total distance covered by the car?
  A)
   50 km                                   done clear
  B)
   75 km   done clear
  C)
          150 km                 done clear
  D)
          200 km done clear
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• question_answer37)
  Two friends A and B started at different times and covered 30 km as shown in the graph. Identify the correct statement from the following.                
  A)
           A and B move with the same speed. done clear
  B)
                   B moves with non-uniform speed. done clear
  C)
                   A completes his journey early. done clear
  D)
                   B overtakes A at 11.20 a.m. done clear
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• question_answer38)
  Which of the following events is used for the measurement of time?                
  A)
                   Occurrence of an earthquake                 done clear
  B)
                   Speedometer in a vehicle                 done clear
  C)
                   Motion of a pendulum                 done clear
  D)
                   Collision of a meteorite with a planet done clear
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• question_answer39)
  Which of the following can be used for measuring the time under ideal conditions?

  (i) The swing of a pendulum

  (ii) Pulse rate

  (iii) The changing of days and nights

  A)
   Only (i) and (ii) done clear
  B)
   Only (ii) and (iii) done clear
  C)
   Only (i) and (iii) done clear
  D)
   (i), (ii) and (iii) done clear
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• question_answer40)
  The graph given below shows the position of an ant at different times. What is its average speed?                
  A)
                  \[1.5\,m\,{{s}^{-1}}\]                                                     done clear
  B)
                                         \[3\,cm\,{{s}^{-1}}\]                                       done clear
  C)
  \[1\text{ }cm\text{ }{{s}^{-1}}\]                                done clear
  D)
  \[~4.5\text{ }cm\text{ }{{s}^{-1}}\] done clear
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