Question

A car decreases its speed from 60 km/h to 40 km/h in 5 secs. Find the acceleration of the
car.​

Answer 1

Answer:

aceleration = v2-v2/T

40-60/5

-20/5

-4 is the acceleration

Explanation:

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Answer 2

Answer:

Initial speed u = 60km/h = 60 X 5/18 = 16.66m/s

Final speed v = 40km/h = 40 X 5/18 = 11.11m/s

Using v = u + at

Or 11.11 = 16.66 + a X 5

==> a = 83.3m/s

Hope it helps u..