Give an example of motion in which the force does no work.

Give an example of motion in which average speed is not zero, but average velocity is zero.

Give an example of motion in which speed remains uniform, but the velocity changes.

Give an example of amphibian which is limbless

Give an example of a motion for which both the acceleration and velocity are negative?

When does a force do work ?

Give an example of motion of a body moving with a constant speed, but with a variable velocity. Draw a diagram to represent such a motion.

Give one example of forced vibration.

On which principle does sonometer work ?

Give an example when work done by the force of gravity acting on a body is zero even though the body gets displaced from its initial position.

Give one example of the following case where a force : moves a stationary body.