Energy Corrections

Energy of motion is which type of energy?

• Potential
• Kinetic
• Sound
• Gravitational

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A 75 kg skier is standing at the top of a 25 m hill.  What would his speed be at the bottom of the hill?

• 18,375 m/s
• 11.06 m/s
• 240,000 m/s
• 22.1 m/s

A 120 kg skier is going 50m/s at the bottom of the hill.  What is the height of the hill?

• 150,000 m
• 2.55 m
• 127.5 m
• 12,250 m

What is the kinetic energy of the diver at point 3?

• 2,500 J

• 5,000 J

• 7,500 J

• 10,000 <

A pirate is 65 kg (he has not been eating well) climbs up to the top of a huge pirate ship 15 m above the ground in 20.0 seconds. Watt is his power? (yar har har)

• 480 Watts

• 49 Watts

• 477.75 Joules

• 9,600 Watts

At which point is potential energy greatest

• W
• X
• Y
• Z

What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s.

• 80 J
• 3.2 J
• 160 J
• 40 J

Tags

NGSS.MS-PS3-1

A student performed 50 joules of work by raising an object 2 meters with a pulley. What was the force on the object?

• 25 newtons

• 48 newtons

• 52 newtons

• 100 newtons

Find the distance an object traveled if a force of 350 N acted on it to produce 0 work?

• 350 m

• 200 m

• 150 m

• 0 m

How much time is needed to produce 720 Joules of work if 90 watts of power is used? 

• 0.125 s
• 8 s
• 64800 s
• 80 s

Tags

NGSS.HS-PS3-1