Work and Power

Question 1

Which statements describe a situation in which work is being done? Check all that apply.

Revolt · Accepted Answer

A box is carried up a flight of stairs by a mover.; Wind blows a pool chair across the yard.; A weightlifter lifts a barbell off the ground.

Question 2

AB✔ C

Revolt · Accepted Answer

C

Question 3

✔ ABC

Revolt · Accepted Answer

A

Question 4

✔ ABC

Revolt · Accepted Answer

✔ A

Question 5

Read each scenario below. Then select the answer that best completes each sentence.

Revolt · Accepted Answer

more than; The power from a car engine is the power of a bicycle because a car engine does the same amount of work in time.: more than; The power from a car engine is the power of a bicycle because a car engine does the same amount of work in time.: less; Raul and Katrina equally shared a frozen lunch but heated each portion in two different microwaves. Katrina’s lunch was warm in one minute while Raul’s lunch took two minutes. The power used by Raul’s: less than; Raul and Katrina equally shared a frozen lunch but heated each portion in two different microwaves. Katrina’s lunch was warm in one minute while Raul’s lunch took two minutes. The power used by Raul’s: more

Question 6

✔ lessmorethe same

Revolt · Accepted Answer

less

Question 7

✔ less thanmore thanthe same as

Revolt · Accepted Answer

less than

Question 8

less✔ morethe same

Revolt · Accepted Answer

more

Question 9

Question 100073

Revolt · Accepted Answer

100073

Question 10

If 120 N of force is applied to a crate to move it 15 m, how much work is done?

Revolt · Accepted Answer

1,800 J

Work and Power Answers

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