Question

A car accelerates uniformly from 18 km/h to 36 km/h in 5 seconds

Answer 1

Answer:

Acceleration = [(final velocity - initial velocity)/time]

1 km/hr = (5/18) m/s

Therefore, 18 km/hr = [18*(5/18)] m/s

= 5 m/s.

And, 36 km/hr = [36*(5/18)] m/s

= 10 m/s

Therefore, acceleration = [(10 - 5)/5 sec]

Thus, acceleration = 1 m/s2.