A sprinter is running along the circumstance of a big sports stadium with constant speed. Which of the following do you think is changing in this case?

A. magnitude in which the sprinter being produced

B. distance covered by the sprinter per second

C. direction in which the sprinter is running

D. centripetal force acting on the sprinter.

A car of mass 1000 kg is moving with a velocity of 10 m s^-1. If the velocity-time graph for this car is a horizontal line parallel to the time axis, then the velocity of car at the end of 25 s will be :

A. 25 m/s^-1 B. 40 m/s^-1

C. 10 m/s^-1 D. 250 m/s^-1

A car moving with an initial velocity of 10 m/s slows down at a constant deceleration and stops after traveling 400 m. What is the time (in seconds) taken by the car to come to a stop?

A. 80 sec B. 60 sec

C. 25 sec D. 40 sec

A student draws a distance-time graph for a moving object shown here, the part which indicates uniform deceleration of the object is :

A. ST B. QR

C. RS D. PQ

A student draws a distance-time graph for a moving scooter and finds that a section of the graph is a horizontal line parallel to the time axis. Which of the following conclusion is correct about this section of the graph?

A. the scooter has uniform speed in this section

B. the distance travelled by scooter is the maximum in this section

C. the distance travelled by the scooter is the minimum in this section

D. the distance travelled by the scooter is zero in this section