06.02 Work Math Wkst

I have reviewed the Work equation and know how to use the triangle trick from the video notes.

I know that the unit for Work is Joules (J)

I know that the unit for Force is Newtons (N)

I know that the unit for Distance is Meters (m).

Known 1:

Known 2:

Show your work for solving the problem... The brakes on a car do 240,000 J of work in stopping the car. If the car travels a distance of 50 m while the brakes are being applied, what is the force (in newtons) the brakes exert on the car?

What is the value for the unknown that you solved for in question 7? Label your answer!

Known 1:

Known 2:

Show your work for solving the problem... You push a refrigerator with a force of 100 N. If you move the refrigerator a distance of 5 m, how much work (in joules) do you do?

What is the value for the unknown that you solved for in question 11? Label your answer!

Known 1:

Known 2:

Show your work for solving the problem... A force of 75 N is exerted couch. The couch is moved 5 m. How much work is done in moving the couch?

What is the value for the unknown that you solved for in question 15? Label your answer!

Known 1:

Known 2:

Show your work for solving the problem... A lawn mower is pushed with a force of 80 N. If 12,000 J of work is done in mowing a lawn what is the total distance the lawn mower was pushed.

What is the value for the unknown that you solved for in question 19? Label your answer!