Practice: Kinetic Energy Calculations

Kinetic Energy, Potential Energy, and Work are all measured in units called (a)  

In the kinetic energy formula (KE = 1/2mv²) the m stands for (a)  

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NGSS.MS-PS3-1

NGSS.MS-PS3-4

In the kinetic energy formula (KE = 1/2mv²) the v stands for (a)  

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NGSS.MS-PS3-1

What unit would the quantity that would replace the "m" be measured with?

• kilograms

• meters

• seconds

• meters per second

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NGSS.HS-PS2-1

What unit would the quantity that would replace the "v" be measured with?

• kilograms

• meters

• joules

• meters per second

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NGSS.MS-PS3-1

What operation would you do first when calculating kinetic energy?

• square the velocity

• multiply by the mass

• multiply by 0.5

• divide by the kinetic energy

A 75kg object traveling at a velocity of 12 m/s has ______ joules of kinetic energy.

Mathematical Equivalence

ON

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

A 50kg object has 2500j of kinetic energy when it hits the ground after falling. How much potential energy did it have before it fell?

Mathematical Equivalence

ON

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NGSS.MS-PS3-5

NGSS.MS-PS3-2

You place a 4kg box on a shelf 2m tall. It falls off the shelf. How many joules of kinetic energy did it have when it hit the ground? (g = 10 m/s²)

Mathematical Equivalence

ON

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

NGSS.MS-PS3-4

A 20kg barrel is traveling 15m/s when it hits the ground after falling off a platform. How many meters high was the platform?

[Round to 2 decimal places. g = 9.8 m/s²]

Mathematical Equivalence

ON

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NGSS.MS-PS3-1

NGSS.MS-PS3-2