A car accelerates at a rate of 10m/s" for a time of 4s. It reaches a speed of 52m/s

Calculate its initial speed.

Vi = 12m/s

Explanation:

According to First Law of Motion

Vf = Vi + a*t

Vf = 52m/s

a = 10m/s^2

t = 4s

Vi = ?

Putting values in Equation

=> 52 = Vi + 10 * 4

=> 52 = Vi + 40

=> 52 - 40 = Vi

=> Vi = 12m/s