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What's the acceleration?

What's the acceleration of a car that starts at rest and has a velocity of 25 m/s in 10 seconds?
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1 Answer

Acceleration is change in velocity over change in time, a=Δv/Δt. Change in velocity is 25 m/s - 0 since the car starts from rest, change in time is 10 s, so
a= (25m/s)/(10s) = 2.5 m/s²