Name the unbalanced force which slows down a moving bicycle when we stop pedaling it.

What will be the momentum of a body of mass ‘m’ which is moving with the velocity?

What is the usual name of the forces which cannot produce motion in a body but only change its shape?

State whether the following statement is true of false.

Unbalanced forces acting on a body change its shape.

When a ball is dropped from a height, its speed increases gradually. Name the force which causes this change its speed.