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3 years ago

Please help with this and explain it,if you can.

Physics

1 answer:

vladimir2022 [97]3 years ago

4 0

Answer:

displacement at 45 s = 30

65 s = 50

So the average speed over the interval from 45 s to 65 s is

(50 - 30) cm / 20 s = 1 cm / sec

As a check an average speed of 1 cm / sec for 20 sec will produce a

displacement of 1 cm / sec * 20 sec = 20 cm or from 30 to 50 cm

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Read 2 more answers

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coefficient of friction, μ = 0.12

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