Question

A car accelerates uniformly in a straight line from rest at the rate of 2.3 m/s2. What is the speed of the car after it has traveled 128 m?

Answer 1

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Acc, a = 2.3 ms^-2

u = 0 (since it is starting from rest position)

v = ?

since, 2as = v^2 - u^2

2 x 2.3 x 128  = v^2 - 0

v^2 = 588.8

v = √588.8

v = 24.26 ms^-1

The answer is 24.26

Explanation: