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15-10-2022
Physics

Answered

A car is coasting backward downhill at a speed of
3
.
0

m
/
s
when the driver gets the engine started. After
2
.
5

s
, the car is moving uphill at
4
.
5

m
/
s
. If uphill is chosen as the positive direction, what is the car’s average acceleration?

Answer :

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