Mechanical energy and Springs

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

• A
• B
• C
• D

Tags

NGSS.MS-PS3-2

At which point(s) on the roller coaster is the kinetic energy at its maximum?

• A
• B
• C
• D

Tags

NGSS.MS-PS3-1

In diagram 2, if the mass of the car is 600 kg, what is the change in potential energy from point A to point B?

• 411,600 J

• 120,000 J

• 176,400 J

• 117,600 Nm

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-1

In diagram 2, if the 600 kg cart is initially at rest, what is its velocity at point B?

• 19.8 m/s
• 15.0 m/s
• 10.3 m/s
• 3.8 m/s

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-4

1. A ball has a 17 J of kinetic energy and its mechanical energy is 25 J. If the ball has a mass of 3.2 kg, what is its height above the ground?

• 0.26 m

• 0.52 m

• 5.2 m

• 25 m

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What is mechanical energy?

• It is what metal creates when heated.
• All potential and kinetic energy in a system.
• It is motion of all matter.
• Energy of momentum.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What does the Law of Conservation of Energy state?

• Energy cannot be created or destroyed
• Nothing can exchange energy
• Energy will increase over time.
• Energy will decrease over time.

Tags

NGSS.MS-PS3-5

What force ultimately slows the roller coaster to a stop?

• Applied
• Normal
• Friction
• Magnetic

Tags

NGSS.MS-PS2-2

How much kinetic energy (KE) does a baseball with a mass of 0.143 kg have if it is travelling at a velocity of 41.1 m/s?

HINT: KE = mv²/2

• 120.8 joules

• 89.7 joules

• 108.3 joules

• 156.6 joules

Tags

NGSS.HS-PS3-1

A 1.0 kg ball is stationary at the top of a hill that is 10.0 meters in height. The ball rolls down the hill. What is its gravitational potential energy at the bottom of the hill?

• 0 joules

• 98 joules

• 49 joules

• 38 joules

Tags

NGSS.MS-PS3-2