Work, Energy, and Power

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

• 12 J

• 8 J

• 20 J

• 5 J

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

NGSS.MS-PS3-4

A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?

• 200 J

• 80 J

• 5 J

• 2000 J

Tags

NGSS.MS-PS3-5

A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?

• 18 m

• 4 m

• 10 m

• 6 m

Tags

NGSS.MS-PS3-4

What is mechanical energy?

• total kinetic energy

• the energy of motion

• total kinetic and potential energy

• temperature plus heat

Tags

NGSS.HS-PS3-2

Where is the kinetic energy of pendulum at its highest?

• at the top of the swing

• at the bottom of the swing

• at 1/4 of the swing

• at 3/4 of the swing

Tags

NGSS.HS-PS3-2

At which point of this roller coaster is the energy 1/2 kinetic and 1/2 potential?

• A

• B

• C

• D

Tags

NGSS.HS-PS3-2

How much work is done in holding a 15 N sack of potatoes while waiting in line at the grocery store for 3 minutes?

• 15 J
• 45 J
• 0 J
• 5 J

If there is no friction on this track, at which point would the coaster have the most kinetic energy?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Where is the roller coaster gaining potential energy?

• A to B

• B to C

• C to D

• The roller coaster is always losing potential energy

Tags

NGSS.MS-PS3-2

How do you calculate power?

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