Science, asked by leahferguson, 10 months ago

you push an old skateboard with a force of 20N. the output force is only 10N. what is the skateboards efficiency? how would the efficiency change if the old, rusty ball bearings were replaced with new ones?

Answers

Answered by nprakash28

0

Answer:

200N

Explanation:

efficiency = output/input×100

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