Potential Energy Quiz

A 3.0 kg scrub jay is squawking in an oak tree in your backyard. If the bird is on a branch located 20.0 m from the ground, how much potential energy does it have?

• 588 J

• 500 J

• 1.47 J

• 2 J

 

A squirrel in a nearby tree drops an acorn and just misses a dog. If the acorn has 255.5 J of potential energy and a mass of 1.0 kg, how high up is the branch from which the acorn fell?

• 250.39 m

• 26.07 m

• 300 m

• 30 m

A gymnast exercises by jumping on a trampoline. At her highest point she is 4.3 m off the ground and has a potential energy of 11466 J. What is the mass of the gymnast?

• 483177 kg

• 250 kg

• 272.09 kg

• 40000 kg

Maria is holding a ball from a height of 2 m that has the potential energy of 10 J, calculate the mass of the ball.

• 0.25 kg

• 196 kg

• 20 kg

• 0.51 kg

 

Brian has an object suspended in the air. It has a mass of 100 kg and is 25 meters above the ground. What is the object’s potential energy?

• 2000 J

• 1000 J

• 24500 J

• 2257 J

Which object has the most potential energy?

• A ball being thrown at 100 miles per hour.

• A ball resting on the edge of a cliff.

• A ball on top of a refrigerator.

• A ball resting on the ground.

Potential energy is when.....

• Energy is stored

• Energy is moving

• No energy is there

• All of the above

Law of conservation of energy is when.....

• Energy is created

• Energy is destroyed

• Energy is created or destroyed

• Energy is never created or destroyed

What is the correct formula for Potential Energy?

• PE = mg + h

• PE = mg / h

• PE = gh

• PE = mgh

What is the gravity on earth?

• 1.0 Joule

• 11.8 m/s^2

• 8.9 M/s^2

• 9.8 m/s^2