Ke, Gpe, Power and Work

What is the equation for calculating work done?

• Work done (J) = Force (N) x speed (s)

• Work done (N) = Force (J) x distance (g)

• Work done (J) = Force (N) x distance (m)

At which point does the ball has the greatest gravitational potential energy (GPE)?

• A

• G

• D

• C

• G

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

What are Equations for Gravitational Potential Energy?

• Gravitational Potential Energy = Mass x Gravitational Field Strength x Height

• Gravitational Potential Energy = Weight x Height

• Gravitational Potential Energy = Mass x Gravitational Field Strength / Height

• Gravitational Potential Energy = Weight / Height

Tags

NGSS.MS-PS3-2

Which would have the LEAST gravitational potential energy (GPE)?

• A ball sitting on the ground

• Moon viewed from the Earth

• An airplane flying 10,000 metres above the ground

• A rock sitting on top of Mt. Everest

Tags

NGSS.MS-PS3-2

How could you increase the gravitational potential energy of an object without changing its mass and gravity?

• Make the object larger

• Lower the object towards the ground

• Raise the object farther off the ground

• Allow the object to roll on the ground

How could you increase the object's gravitational potential energy (GPE) without changing its distance from the ground (height) and gravity?

• Decrease the object's mass

• Increase the object's height

• Increase the object's mass

• Decrease the object's height

____________ is the ability to do work.

• Energy

• Force

• Friction

• Motion

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

• height and mass

• friction and movement

• mass and movement

• height and friction

Tags

NGSS.HS-PS2-4

You throw a ball into the air as shown in the diagram. At what point does the ball have the most gravitational potential energy?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

At which position does the child on the swing have the most gravitational potential energy?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2