Question

a car accelerates from 0 to 40ms in 20s. what is the average acceleration of the car

Answer 1

initial velocity (u) = 0
final velocity (v) = 40m/s
time (t) = 20 seconds
acceleration = ?
so,

by using first equation of motion , we will find the acceleration,

v = u + at
40 = 0 + 20a
20a = 40
a = 40/20
a = 2m/s^2

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