Energy, Work, and Power

What is the kinetic energy of an 9 kg bowling ball rolling at 3.30 m/s?

• 29.7 J

• 323.4 J

• 49.005 J

• 14.85 J

Tags

NGSS.MS-PS3-1

An 80 kg skier stands at the top of a 40 meter slope. What is her gravitational potential energy before she skies down the slope?

• 3200 J

• 31,360 J

• 15,680 J

• 19.6 J

Tags

NGSS.MS-PS3-2

Where would a car traveling on a roller coaster track have the most potential energy?

• At the bottom

• Halfway to the top

• at the top

• halfway to the bottom

• It is always the same

Tags

NGSS.MS-PS3-2

Which point has the most kinetic energy?

• Ball G

• Ball F

• Ball E

• Ball D

• Ball A

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Energy is the rate at which work is done

• True

• False

Energy of a rock perched on a cliff is an example of...

• (gravitational) potential

• elastic

• chemical

• kinetic

Tags

NGSS.MS-PS3-2

How do you calculate power?

• P = W/t
• P = E/t
• P = w * t
• P = bbq/chicken

How do we calculate work?

• W = F * d
• w = f * D
• W = F * D
• w = f * d

The SI unit of work is?

• Joules
• Watts
• Newtons
• meters

The energy of movement is...?

• Kinetic energy

• Potential potential

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5