Question

A car travelling at 20km/h, it speeds up to 60km/h in 6 seconds. What is its acceleration?

Answer 1

Acceleration=v-u/t
v=60 kmph
u= 20kmph
t=6s
acceleration=60-20/6=40/6=6.66m/$s^{2}$

Answer 2

Acceleration = Final speed-Initial speed/time
a=60-20/6
=40/6
=6.66....
=6.67 m/s².(approximately)
Therefore,the acceleration of the car is 6.67 m/s²(approximately)