9th Class
Science
Force and laws of motion
Question Bank
9th CBSE Science Force and laws of motion
question_answer
The
speed-time graph of a car of 1000 kg mass is given. On the basis of this,
answer the following questions
(i) When is the maximum force acting on car?
(ii) What is the retarding force acting on the car?
(iii) For how long is no force is acting on the car?
(iv) What is the velocity of the car after 4 seconds?
(v) Find the acceleration of the car during each of the
first two intervals of four second each.