EFM-Lesson 5: Potential and Kinetic Energy

What term best describes potential energy?

• motion

• stored

• primary

• secondary

The energy associated with moving objects is...

• potential energy.

• kinetic energy.

• nuclear energy.

• mechanical energy.

What unit is the measure of energy?

• Newtons

• Grams

• Meters

• Joules

Potential energy is...

• energy that can be released.

• energy that is motion.

• energy that is only associated with nuclear energy.

• No options presented are correct.

Which two things affect kinetic energy?

• mass and height

• height and speed

• speed and mass

• velocity and inertia

Which two things affect gravitational potential energy?

• mass and speed

• speed and height

• height and mass

• mass and velocity

Which object would have the greatest kinetic energy?

• A 50 ton semi-truck driving 10 miles per hour.

• A 50 pound child riding a bicycle 10 miles per hour.

• A 10 ton car driving 10 miles per hour.

• This is a trick question. All objects have the same kinetic energy because they are all traveling 10 miles per hour.

There are four vehicles, each with a mass of 2 tons. Vehicle A is traveling 5 mph. Vehicle B is traveling 10 mph. Vehicle C is traveling 15 mph. Vehicle D is traveling 20 mph.Which object would have the greatest kinetic energy?

• Vehicle A

• Vehicle B

• Vehicle C

• Vehicle D

Two books, each with a mass of 10 pounds, were dropped from different heights. Book A was dropped form 1 meter and Book B was dropped from 2 meters. Which book had the greater gravitational potential energy?

• Book A because it was dropped from a lower height.

• Book B because it was dropped from a taller height.

• Book A and B have the same gravitational potential energy because they both have the same mass.

A stuffed animal with a mass of 100 grams was dropped from a height of 1 meter. Another stuffed toy with a mass of 50 grams was also dropped from one meter. Which stuffed toy has a greater gravitational potential energy?

• The stuffed toy with a mass of 100 grams because is has more mass.

• The stuffed toy with a mass of 50 grams because is has less mass.

• Both studded toy were dropped from a height of 1 meter, meaning that they both have the same gravitational potential energy.