A particle is moving in a circular path of radius r. The displacement after half a circle would be _______.

Suppose a boy is enjoying a ride on a marry go round which is moving with a constant speed of 10 m/s. It implies that the boy _______.

What is one way you might increase the stability of an object?

If the velocity of an object increases with respect to time, then the object is said to be in_______ acceleration.

The slope of the speed–time graph gives _____

In _______ equilibrium its centre of gravity remains at the same height when it is displaced.

A car started from rest and travelling with velocity of 20 m /s in 10 s. What is its acceleration?

All objects having uniform speed need not have uniform velocity. Describe with the help of examples.

Correct your friend who says “The acceleration gives the idea of how fast the position changes”.

Show the shape of the distance – time graph for the motion in the following cases.
a. A bus moving with a constant speed.
b. A car parked on a road side.

What is centre of gravity ?

Explain the types of stability with suitable examples.