science

you do 185 J of work pulling a cart
up a ramp. if the ramp does 153 J of work,what is the efficient of the ramp?
A)82.7 percent
B)121.0 percent
C)32.0 percent
D)338.0 percent

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  1. what is 153/185 ? Technically, the ramp does not do work, it absorbs energy (work) as friction.

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    bobpursley
  2. Your putting pressure and weight on the ramp so technically the ramp is working.

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  3. oh and I think the answer is 121.0 if not then it might be 82.7

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  4. ok

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  5. It’s A
    The answers for the full test are
    1.A
    2.C
    3.A
    4.A
    5.D

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  6. Test answers
    B
    C
    A
    A
    D

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