
An object is said to be in motion if its position _____ with respect to another object.

Important Questions on Primary Concept of Force and Energy
Pick the odd one out. Give scientific reason for your answer.
Table, chair, flying bird, tree


The girl is _____ with respect to the bicycle. (in motion / at rest)

A bullet loses of its velocity after penetrating a plank. How many planks are required to stop the bullet?

What happens to the speed of a moving object when force is applied to it?



The girl on the swing is _____ with respect to the seat of the swing. (in motion / at rest)


What could be the possible consequences when an equal amount of force is applied to an object from two opposite directions?

Which of the following shows the velocity (v) - time (t) graph for falling apple?

Which of the following changes are possible, when a force is applied to an object?

Change in the state of motion means

Choose the correct option.
Which of the following objects is not at rest with respect to the Earth?

The girl on the bicycle is _____ with respect to the road. (in motion / at rest)



The girl is _____ with respect to the garden. (in motion / at rest)

What will happen if the direction of the force applied is opposite to the movement of an object?

What will happen if the force applied to an object is in the direction of its motion?

