100+ Force and Motion Quiz with Answers - 1

Question: 1

What is a vector quantity?

A vector quantity is one which has both magnitude and direction. Example – Displacement, Velocity, Acceleration, Force

Question: 2

Distinguish between speed and velocity?

Speed

Speed = Distance travelled / Time

2. It is a scalar.

3. It does not have a direction.

Velocity 1. It is displacement of an object in one second.

Speed = Displacement / Time

2. It is a vector.

3. It has the direction of the displacement.

Question: 3

What is centripetal acceleration?

An object moving with a uniform speed in a circular path has an acceleration directed towards the centre of the circular path. This is called centripetal acceleration.

Question: 4

Define Instantaneous velocity?

The velocity of an object in motion at an instant or at a point is known as instantaneous velocity.

Question: 5

Define uniform velocity?

If an object has equal displacement in equal intervals of time, it is said to move with uniform velocity.