CC8
Practice Problems
NOTE : For purposes of this test you may take g=acceleration of gravity to be 10 m/s^2 .
New Problems
reloads the page with new variable values in all questions. You must do this after grading the test to rework it another time.
Make sure to enter your answers in the specified units .
1
A horizontal force of Newtons acts on a kilogram mass and moves it meters horizontally. How much work was done. Your answer should be in Joules.
2
A man who weighs 750 Newtons lifts a kilogram box a vertical distance of meters. How much work did he do? Your answer should be in Joules.
3
A footballl player who weighs Newtons runs up a flight of stairs. The vertical height of the staircase is meters. How much work did he do? Your answer should be in Joules.
4
How much power does it take to lift a kilogram mass a vertical distance of meters in seconds? Your answer should be in Watts.
5
How much kinetic energy does a Newton boy have if he is running at m/s? Your answer should be in Joules.
Once you have submitted your answers for grading by clicking the grade button, you
cannot resubmit answers
for the same Problem Set--you must use the 'New Problems' button first.
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