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question_answer1) Thomas and Mary are playing carom board. They arrange the seeds in the vertical order. Thomas strikes on the seeds with the striker, with a great speed. He finds that, the stakes do not fall down. On the other hand, when he strikes the seeds with less speed, all the seeds of the stakes fell down. Which property of force this shows?
question_answer2) Steven was driving a car, whose mass is 1500 kg. Due to sudden traffic, he had to change his velocity from 72 km/h to 36 km/h. Find the change in momentum of his car.
question_answer3) While playing cricket Thomas hurt his palm on trying to catch the ball coming in his direction. On the other hand his friend jack while catching the ball pulls his hand backward, and is not hurt. The reason for this is:
question_answer4) Which one of the figure represents the sliding friction?
question_answer5) Which one of the following is an example of Newton's third law of motion?
question_answer6) Two boys X and Y throw balls of equal mass and size towards each other. On the way the balls collide with each other and get stick together, come to rest. The collision is called:
question_answer7) David was riding his bicycle. After some time, he got tired and stopped paddling the cycle. The cycle stopped after traveling some distance. Which laws of motion helps us to explain this phenomenon?
question_answer8) Two cars, X of mass 1500 kg and velocity 25 m/s and car Y of mass 1000 kg and velocity 15 m/s are moving towards each other head on. After collision, the velocity of the car X becomes 20 m/s. Find the velocity of car Y after the collision.
question_answer9) James combs his hair and brings the comb near some tiny pieces of paper. He finds the comb is attracting paper pieces. The force of attraction by the comb on the tiny piece of paper is due to which one of the following force?
question_answer10) Match the following column: Sr. No. Objects Nature of force Force on falling ball A. Frictional force Force on moving charge B. Muscular force Force on lifting objects C. Electrostatic force Force on sliding ball D. Gravitational force
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