When we talk of force acting on a body, it usually means:

A. Electrical force

B. Balanced force

C. Unbalanced force

D. Nuclear force

When a toothpaste tube is squeezed, its shape changes. The force responsible for this is an example of:

A. Balanced forces

B. Centripetal forces

C. Unbalanced forces

D. Centrifugal forces

The inertia of an object tends to cause an object:

A. To increase its speed

B. To decrease its speed

C. To resist a change in its state of motion

D. To decelerate due to friction

A passenger in a moving train tosses a coin which falls behind him. This shows that the motion of train is:

A. Accelerated B. Uniform

C. Retarded D. along circular track

‘When a hanging carpet is beaten with stick, the dust particles start coming out of it’. This phenomenon can be best explained by making use of:

A. Newton’s third law of motion

B. Newton’s law of gravitation

C. Newton’s first law of motion

D. Newton’s second law of motion