Question

A car is travelling at 18km/h, it's speed up to 54km/h in 6 seconds , what is its acceleration?​

Answer 1

Answer:

10/6 m/s^2

Explanation:

u = 18 km/h = 5 m/s

v = 54 km/h = 15 m/s

t = 6 sec

a = v-u /t = 15-5 / 6

= 10/6

Answer 2

Answer:

initial velocity (u)=18km/h×5/18=5m/s

final velocity (v)=54km/h*5/18=15m/s

from v=u+at

15=5+(a*6)

15-5=6a

10=6a

acceleration =1.66m/s^2