Practice: Potential Energy Review

Gravitational Potential Energy can be increased by increasing the ________ of the object. (Choose all that are correct. May be more than 1 answer)

• mass

• height

• speed

• volume

• temperature

Answer explanation

The formula for gravitational potential energy is PE = mgh

m is the mass of an object

h is the height of an object

g is a constant for Earth's gravity that doesn't change (9.8 m/s/s)

so increasing mass or height would make the PE larger

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NGSS.MS-PS3-2

In science, the standard unit to measure mass is

• the liter

• the meter

• the kilogram

• the kelvin

In science, the standard unit to measure height would be

• the liter

• the meter

• the kilogram

• the second

The formula for potential energy is PE = mgh.

What does the "m" stand for?

Tags

NGSS.MS-PS3-2

The formula for potential energy is PE = mgh.

What does the "h" stand for?

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NGSS.MS-PS3-2

In the formula PE = mgh, g should equal ____ m/s²

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NGSS.MS-PS3-2

An object has a mass of 5 kg. If it is raised to a height of 4 m, and we estimate the acceleration of gravity to be 10 m/s², we would ______ all of these numbers to find the potential energy of the object. (PE = mgh)

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NGSS.MS-PS3-2

The standard unit we use to measure energy (including potential energy) is the _________

How many joules of potential energy are found in a 10kg bowling ball stored on a shelf 2.5 meters high? (PE = mgh, g = 9.8 m/s²)

Mathematical Equivalence

ON

Tags

NGSS.MS-PS3-2

A 500kg piano falls from a height of 20 meters. How many joules of kinetic energy will it have when it is halfway to the ground?

(PE = mgh; g = 9.8 m/s²)

Mathematical Equivalence

ON

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

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