_________________ is the ability to do work.

Energy due to height. 

A form of energy that is in motion.

PE + KE = ?

An apple on a tree possesses what form of energy?

How to increase an object's potential energy?

When can we say that a work is done?

What is the equation of work?

When you lift a box and then move forward, what does it suggest? 

Perpendicular means the angle between force and displacement is?

It is the rate at which work is done.

Power's equation is?

What is the unit of power?

Force is a __________ or a pull.

Classify the following: