sciencee

:)

You do 90 joules of work in 30 seconds. What is your power?

3W

The more POWER you use to move an object, the more work you do.  (true or false)

false

Machines do not change the amount of work done. (true or false)

true

stage curtain pulley has an MA of 9.  What is the output force of the stage curtain if you have to use 400 N of force to move the curtain?

3600 newtons

The car needs to reach the top of the box.  Select the two true statements about the inclined planes shown below. 

• 
  

  "Inclined Plane A" distributes force over the greatest distance., "Inclined Plane C" is the most efficient.

force

joules

distance

meters

work

newtons

time

seconds

power

watts

How much work is done if your friend uses 500 Newtons of force for 10 meters?

5000 joules

power

the rate of how fast or slow work gets done

newtons (unit of…)

force

What is an example of a wheel and axle?

doorknob

True or false: Work is done when an object moves in the direction that force is applied.

true

What distance did Mr. Smith carry a box if he did 3000 j of work and used a force of 500 N?

6m

joule (j)

unit of work

Which simple machine is pictured?

pulley

work/distance will give you?

force

How much force is used if Mr. King does 240 j of work over 80 meters

3 newtons

True or false: Work is done when an object moves in the direction that force is applied.

true

Increasing the time you complete the work will _____________ the amount of work

not change