The truck of a passenger car applies brakes at a velocity of 30 m/s and comes to rest 5 seconds later. What is the deceleration?

Answer 1

(30 m/s)/(5s) = 30/5 = 6 m/s^2

Answer 2

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Answer 3

Let have the final velocity=30 u=0
D=v-u/t
=30-0/5
=6s