Calculating Potential Energy

Determine the potential energy of a .5 kg book that is on a 2 m shelf. Gravity is equal to 9.8.

Tags

NGSS.MS-PS3-2

A baby carriage sitting at the top of a hill is at a height of 21 m high. The carriage with the baby weighs 12 N. What kind of energy does the carriage have and how much?

• potential energy and 1.75 J

• potential energy and 252 J

• kinetic energy and 252 J

• kinetic energy and 1.75 J

Tags

NGSS.MS-PS3-2

An 2 kg apple is hanging in a tree, 3 m off the ground. What is the gravitational potential energy (gravity = 9.8 m/s²) of the apple?

Which of the following has the greatest amount of gravitational potential energy (gravity = 9.8 m/s²)?

• A 20 kg projector suspended 10 m in the air

• A 100 kg wrecking ball suspended 10 m in the air

• A 5 kg basketball suspended 10 m in the air

• They all have the same GPE because they are all 10 m in the air

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

A golf ball has a mass of 0.046 kg. It is dropped from a height of 2.4 meters (gravity = 9.8 m/s²). What is the amount of potential energy in Joules? (round to 2 decimal places)

Tags

NGSS.MS-PS3-2

Gravitational potential energy depends on the strength of gravity, ________ and ________ of the object.

• height and mass

• friction and movement

• mass and movement

• height and friction

Which is the correct unit for expressing gravitational potential energy?

• Joule

• Newton

• m/s²

• meter

Tags

NGSS.MS-PS3-2

Which of the following is the correct equation for calculating an object's gravitational potential energy?

• PE = mgh

• PE = mg / h

• PE = mg + h

• PE = gh

What is the gravitational potential energy (GPE) of a 1 kilogram book that is 1 meter above the ground?

g = 9.8 m/s²

Tags

NGSS.MS-PS3-2

There is a clock at the top of a tower that is 45m high. The clock weighs 20 kg. Calculate its potential energy. Remember g=9.8 m/s

Tags

NGSS.MS-PS3-2