PHYSICS MIDTERM

Front

Energy is the ability to do __________.

Back

Work

Front

What is the formula for calculating potential energy?

Back

Potential Energy (PE) = mass (m) × gravity (g) × height (h)

Front

What is the potential energy of a 1kg mass 1 m above the ground?

Back

10 J

Front

What is the work done when a force is applied but there is no movement?

Back

0 J

Front

What is the relationship between force and motion when an object does not move?

Back

The force applied is equal to the force exerted back by the object (Newton's Third Law).

Front

If you push on a tree with 20 N of force and it doesn't move, how much force is the tree pushing back on you?

Back

20 N

Front

What is the formula for work done?

Back

Work (W) = Force (F) × Distance (d)

Front

How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?

Back

3.6 m

Front

What is the unit of work in the International System of Units (SI)?

Back

Joule (J)

Front

What is kinetic energy?

Back

Kinetic Energy (KE) = 1/2 × mass (m) × velocity (v)²