Work, Power, and Energy

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

• gravitational
• elastic
• chemical
• kinetic

Tags

NGSS.HS-PS2-4

Energy from a compressed spring would be an example of...

• kinetic
• elastic
• gravitational
• chemical

How much work is being done with 200 N of force over 426 meters?

• 85,200 J
• 45,620 J
• 90,480 J
• 62,329 J

The SI unit of work

• Joules

• Watts

• Newtons

• meters

The SI unit for power

• Watts

• Joules

• Newtons

• Meters

Gravitational potential energy depends on the ________ and ________ of the object.

• Height and mass

• Spring constant and Distance away from equilibrium

• Mass and Velocity

• Height and Friction

A student with a mass of 62 kg walks up a flight of stairs with a height of 3.4 meters. How can he decrease his power?

• walk slower

• walk faster

• carry his friends books

A student with a mass of 62.0 kg walks up a flight of stairs with a height of 3.40 meters. If it takes him 7.00 seconds to get to the top, how much power did he generate?

• 295 W

• 2070 W

• 86.8 W

• 295.12 W

Kinetic energy depends on the ________ and ________ of the object.

• Height and Mass

• Spring constant and Distance away from equilibrium

• Mass and Velocity

• Height and Friction

Definition: the transfer of energy that occurs when a force moves an object

• power

• energy

• work

• Efficiency

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5