science !!! help

please answer these 4 questions about since I know nothing about this.

1. A box of cleaning supplies weighs 15n.if the box is lifted a distance of 0.60m,how much work is done?

A. 0.040 j
B.9 j
C.14 j
D.25 j

2.to chop wood you apply 50.0n of force to an ax. The ax applies 600.0n of force to the wood. What is the mechanical advantage of the ax?

A. 650.0
B. 8.3
C. 12.0
D. 0.0833

3.you do 185 j of work pulling a cart up a ramp. if the ramp does 153 j of work, what is the efficiency of the ramp?

A. 82.7 percent
B. 121.0 percent
C. 32.0 percent
D. 338.0 percent

4.remy noticed that after oiling his skateboard wheels, it was easier to reach the speeds he needed to perform his tricks. How did the oil help??

A. the oil reduced friction between the moving parts of the skateboard.

B. the oil increased friction between the moving parts of the skateboard

C. the oil reduced friction between the skateboard wheels and the ground.

D. The oil increased friction between the skateboard wheels and the ground.

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asked by Matt
  1. Oh come on, take some guesses. At least try #2 and #4

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    posted by Damon
  2. ok b AND d for 2 and 4

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    posted by Matt
  3. is number four d.

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  4. where do you live !@#$%^& your going to jail

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    posted by saadaa
  5. 1. B
    2.C
    3.A
    4.A
    5.D

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    posted by Help!!!
  6. Thanks Help!!! Is 100% correct

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  7. i just took the test i am being 100% honest and Help!! is right thank you help!!

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