Question

A car accelerates from 0 to 72 km/hr in 8 seconds. What is the car's acceleration?

Answer 1

Initial Velocity (u) = o m/s

Final Velocity (V) =(72*1000)/1*60*60 m/s

= 20m/s

time (t) =8 sec

Acceleration(a)= v-u /t

=(20-0)/8

=2.5 m/s^2

this is the answer i just did the problem

Answer 2

Step-by-step explanation:

Vi = 0 m/s

Vf = 72 km/hr = (72×5)/18 = 20 m/s

t = 8 s

Vf = Vi + a×t

20 = 8a

a = 2.5 m/s^2