Potential (GPE) and Kinetic (KE) Energy practice

Presentation

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Science

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9th - 11th Grade

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Practice Problem

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Medium

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NGSS

MS-PS3-2, MS-PS3-1, MS-PS3-5

Standards-aligned

Emily Ramon

Used 69+ times

FREE Resource

13 Slides • 10 Questions

Potential (GPE) and Kinetic (KE) Energy practice

Kinetic Energy

Energy of Motion

KE = .5 x m x v²
Energy = Joules
Weight = Newtons
Mass = Kilograms
Velocity = m/s
Gravitation Acceleration = 9.8 m/s²

Gravitaional Potential Energy

Energy of Position

PE = mass x gravitational acceleration (9.8 m/s²) x height OR
Weight x Height
Newtons = kg m /s²
Joules (J)= kg m²/s²
Weight = mass x gravity

Multiple Choice

Determine whether the object in the following problem has kinetic or potential energy.

You serve a volleyball with a mass of 21 kg. The ball leaves your hand with a speed of 30 m/s. The ball has _____________ energy.

Potential

Kinetic

You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. The ball has _____________ energy.

The ball is in motion, so It has kinetic energy.
The formula we will use to solve for the amount of kinetic energy is:
.5 x m x v²

Fill in the Blanks

Type answer...

Solve the problem:

You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m/s. Solve for the amount of Kinetic Energy. (KE = .5 x m x v²)

Using the formula KE = .5 x m x v² Let's plug in our known values.
.5 x 2.1 x 30²
30² = 900 so...
.5 x 2.1 x 900 = 945

Multiple Choice

Determine whether the object in the following problem has kinetic or potential energy.

A baby carriage is sitting on a hill that is 21 m high. The carriage with the baby weighs 12 N. The carriage has _________ energy.

potential

kinetic

A baby carriage is sitting on a hill that is 21 m high. The carriage with the baby weighs 12 N. The carriage has _________ energy.

The carriage is not in motion, yet.
So we say the carriage has potential energy based on it's position at the top of the hill.
.We will use the formula GPE = Weight x height to solve for the amount of potential energy. GPE = W x h

Fill in the Blanks

Type answer...

A baby carriage is sitting on a hill that is 21 m high. The carriage with the baby weighs 12 N. The formula we will use is GPE= weight x height

GPE = w x h
GPE = 12N x 21 m = 252
Energy is measured in Joules, so it would be 252 J

Multiple Choice

Determine whether the object in the following problem has kinetic or potential energy.

A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. The car has _____________ energy.

potential

kinetic

A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. The car has _____________ energy.

Because the car is moving/in motion, we say it has kinetic energy.
The formula we will use to solve is
KE = .5 x m x v²

Fill in the Blanks

Type answer...

A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. Let's solve for the kinetic energy of the car.

KE= .5 x m x v²
Let's plug in the values that we know.
KE = .5 x 1120 x 40²
KE = .5 x 1120 x 1600
KE = 896000 Joules

Multiple Choice

Determine whether the object in the following problem has kinetic or potential energy.

A cinder block is sitting on a platform 20 m high. It weighs 79 N. The block has _____________ energy.

potential

kinetic

A cinder block is sitting on a platform 20 m high. It weighs 79 N. The block has _____________ energy.

The block is not moving therefore it has potential energy.
Use the formula GPE = Weight x height

Fill in the Blanks

Type answer...

Let's Solve!

A cinder block is sitting on a platform 20 m high. It weighs 79 N. Solve for the potential energy of the block.

GPE = weight x height
GPE = 20 x 79 = 1580 J

Multiple Choice

Determine whether the object in the following problem has kinetic or potential energy.

There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N. The bell has _____________ energy.

potential

kinetic

There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N. The bell has _____________ energy.

The bell is not moving therefore it has potential energy
Use the formula GPE = weight x height

Fill in the Blanks

Type answer...

There is a bell at the top of a tower that is 45 m high. The bell weighs 190 N. Let's solve!

The formula for GPE = weight x height
Plug in known values.
GPE = 45 x 190
GPE = 8550 J

Potential (GPE) and Kinetic (KE) Energy practice

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