Question

Q20. A truck travelling at 72 km/h slows down to 18 km/h in 10 sec. Calculate the acceleration. 1

Answer 1

Answer:

- 1.5 m/s^2

Explanation:

Accleration = Change in velocity ÷ Time taken

Initial velocity = 72 km / hr = 20 m / s

Final velocity = 18 km / hr = 5 m / s

Change in velocity = Final - Initial = 5 - 20 = - 15 m / s

time taken = 10 s

Acceleration = -15 / 10 = - 1.5 m/s^2