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20-02-2020
Physics

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Dean is slowing down on his skateboard. He starts at a speed of 5.5 m/s and slows to 1.0 m/s over a time of 3.0 seconds. What is Deans acceleration?

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28-09-2020

Answer:

Explanation:

we know that acceleration =Δv/t

Δv=vf-vi

Δv=1.0-5.5=-4.5

now

a=-4.5/3.0

a= -1.5m/s²

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