Question

A car goes from 40n/s to 60 m/s in 8s the acceleration of the car is

Answer 1

The acceleration is the change in velocity. The kinematic formula that is used is a=Δv/Δt.
Δ- stands for change in velocity
given: vi=40 m/s, vf=60 m/s, t= 8s
Δv= vf-vi= 60-40=20
a=20/8=2.5
a=2.5 m/s^2

Answer 2

Acceleration= change in velocity/ change in time.

60-40=20 m/s (change in speed)
Time= 8 seconds

20/8= 2.5
Acceleration= 2.5 m/s^2

Hope this helps! :)