Work & Power

Question 1

A student lifts the bowling ball slowly off the ground, are they doing work?

Answer 1

Yes

Question 2

A student is holding a bowling ball above their head, are they doing work?

Answer 2

No

Question 3

A student is lowering a bowling ball to the ground, are they doing work?

Answer 3

Yes

Question 4

Work is done on an object when a _____causes a change in _____ (🔺x)

Answer 4

1. Force
2. Displacement

Question 5

In order to have a change in displacement there must be a ___1___
Aka the object must be ___2___

Answer 5

1. In motion
2. Moving

Question 6

The following must be the case to do the work….
1. Must be in motion (change in ____)
2. Force must be applied _______(with) to the direction of motion

Answer 6

1. Displacement
2. Parallel

Question 7

To achieve MAX work:
The force and displacement must be _______in the same direction

Answer 7

Completely

Question 8

Force
➡️
➡️
Displacement

Answer 8

Max work

Question 9

Force
↗️
➡️
Displacement

Answer 9

Same work

Question 10

Force
⬆️
Displacement
➡️

Answer 10

NO WORK

Question 11

Power is the rate at which ____ is done; rate of _____ transfer

Answer 11

1. Work
2. Energy

Question 12

How much ____ is done in a certain amount of ____

Answer 12

1. Work
2. Time