Question

A car traveling 60 km/h accelerates at the rate of 2m/s^2 how much time is required for the car to reach a speed of 90 km/h

Answer 1

Answer:

t= 25/6 s = 4.16 s

Explanation:

acceleration = 2m/s^2

initial speed =60km/h = 50/3 m/s

final speed =90 km/h = 25 m/s

v = u + at

25 = 50/3 + 2t

2t = 25 - 50/3

= 25/3

t = 25/6 s

= 4.16s