100+ Force and Motion Quiz with Answers - 3

Question: 11

What is the resultant displacement?

The resultant displacement of an object is the vector sum of all its displacement.

Question: 12

Distinguish between the Distance and Displacement?

Distance

1. Length of the actual path travelled by a body.

2. It is a scalar.

3. Depends on the path.

4. Distance = speed x time.

Displacement

1. Length of the straight line path between two points.

2. It is a vector.

3. Does not depend on the path but depends on the initial and final positions of a body.

4. Displacement = velocity x time

Question: 13

What is meant by uniform acceleration?

If the change in velocity of a moving object is equal at equal intervals of time, it is called uniform acceleration.

Question: 14

What is acceleration due to gravity?

The acceleration of an object due to the gravitational force of attraction is called acceleration due to gravity. The value of g = 9.8 m/s².

Question: 15

Define rest?

An object which does not change its position with respect to time is said to be at rest.