If the displacement of an object is proportional to the square of time, then the object is moving with :

A. uniform velocity

B. uniform acceleration

C. increasing acceleration

D. decreasing acceleration

Answer||B

The slope of a speed-time graph gives :

A. distance travelled

B. velocity

C. acceleration

D. displacement

The area under a speed-time graph represents a physical quantity which has the unit of :

A. m

B. m²

C. m s^-1

D. m s^-2

Four cars A, B, C and D are moving on a levelled, straight road. Their distance-time graphs are shown in the given figure. Which of the following is the correct statement regarding the motion of these cars?

A. car A is faster than car D

B. car B is the slowest

C. car D is faster than the car C

D. car C is the slowest

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