8_Science: Power, Energy, Work

The unit of work is

• watt

• hertz

• joule

• pascal

Tags

NGSS.MS-PS3-5

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

• gravitational
• elastic
• chemical
• kinetic

Tags

NGSS.MS-PS3-2

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

• kinetic
• elastic
• gravitational
• chemical

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

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 for power is...?

• Watts
• Joules
• Newtons
• Meters

What is the formula for Kinetic Energy?

• PE = m*g*h
• KE = 1/2m*v2
• W = F*d
• P = W/t

If 150 Joules of work is needed to move a box 10 meters, what force was used? 

• 1500 N
• 15 N
• 1.5 N
• 150 N

Tags

NGSS.MS-PS2-2

If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?

• 272 m
• 17 m
• 4.05 m
• 272 cm 

Tags

NGSS.MS-PS3-4