Newton's Laws and Marble Coasters

What is the GPE of a 1 kg ball at position 3 if the height is 1 meter? GPE on Earth = mass x 9.8 m/s/s x height

• 9.8 J

• 16.8 J

• 9.8 m/s/s

At which position would kinetic energy be greatest?

• W
• X
• Y
• Z

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which has more kinetic energy traveling at the same speed - a 50 kg lion or a 3 kg turtle?

• Lion

• Turtle

• It doesn't matter

MATH BREAK: f = ma. What is the mass of a dog accelerating at 3 m/s with a force of 12N? 

• 3 kg
• 4 kg
• 3 m/s
• 4 N

Tags

NGSS.MS-PS2-2

According to Newton's 3rd law, forces act in pairs. Sam is doing push ups in PE. If the action force is "Sam pushes down on the ground", what is the reaction force? (choose the best answer)

• the ground moves

• the ground pushes Sam

• the ground pushes UP on Sam

A child goes down a slide. What 2 unbalanced forces slow the child down?

• friction from the slide

• air resistance

• gravity

Check out the hill leading into the loop. What is true about this team's roller coaster?

• The long steep hill helps to generate more kinetic energy and more speed

• The long steep hill lowers the kinetic energy of the marble

• If this group wants to increase the kinetic energy, they need to lower the start point.

This team made a Squidward roller coaster. Where does the marble have the LOWEST Gravitational Potential Energy?

• A

• B

• C

This team made a Squidward roller coaster. Where does the marble have the MOST Kinetic Energy?

• A

• B

• C

When the marble goes UP the loop,

• potential energy converts to kinetic energy

• kinetic energy converts to potential energy