Work, Energy and Power

What is energy?

• It is measured in watts
• It is power
• It is the ability to do work
• It is fluid motion

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The unit used to measure work is the 

• Watt
• Newton
• Joule
• meter

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

If you push a coffee mug 1.4 m using a force of 5 N, the work done on the mug is?

• 7 J

• 6 J

• 8 J

• 9 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

At which point is potential energy greatest

• W
• X
• Y
• Z

At which point is kinetic energy greatest 

• W
• X
• Y
• Z

Tags

NGSS.HS-PS3-2

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

• Height and mass
• Friction and movement
• Mass and Movement
• Height and Friction 

Bro A bench presses 145-lbs five times in 20 seconds.
Bro B bench presses 145-lbs five times in 10 seconds.

• Bro A has more power
• Bro B has more power
• Both Bros have the same power
• Bro

You drop a 5 kg ball from a height of 2 m. Just before it reaches the ground, how much kinetic energy does it have?

• 10 J
• 100 J
• 7 J
• 20 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5