sabrinathompson022 sabrinathompson022
  • 04-12-2019
  • Geography
contestada

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.​

Respuesta :

rufiladhani rufiladhani
  • 04-12-2019

Answer:

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

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