Motion Test - 5...

A driver has to apply sudden brakes to stop his vehicle moving at $$72 \   {km}/{hr}$$ and stops within $$2 \ seconds$$. The retardation produced is then

If a trolley starts from rest with an acceleration of 2 $$m/s^2$$, the velocity of the body after 4 s would be

A stone is thrown vertically upward with an initial velocity u from the top of a tower, reaches the ground with a velocity 3 u. The height of the tower is 

A driver is driving his car along a road is shown in Fig. The driver makes sure that the speedometer reads exactly 40 km/h. What happens to the velocity of the car from P to Q?

Figure shows the displacement-time graphs (a) and (b) for a body moving in a straight path drawn on the same scales. Then

A body moving along a circular path may have

The SI unit of speed is:

What does the speed of a body describes about its motion ?

The velocity of a particle increases from u to v in a time t during which it covers a distances S. If the particle has a uniform acceleration, which one of the following equations does not apply to the motion?

A stone projected vertically upwards reaches to the level of window $$10\ m$$ from the ground. Find the magnitude of the velocity of the stone at the time of its projection.