Question

A bus running at a speed of 18 km/h is stopped in 2.5 sec by applying brakes .calculate the retardation produced

Answer 1

Since 18km/hr=5m/s. Apply first equation of motion and put v=0 u=5 and t=2.5 and u will get a=-2m/s2

Answer 2

Answer: -2 m/s 2

Explanation: Since 18 km/hr=5 m/s. Apply first equation of motion and put v=0 u=5 and t=2.5 and u will get a=-2 m/s 2