Question

A bus starts from rest and attains a velocity of 54kmh^1 in 20s . Find the acceleration of the bus

Answer 1

Answer:

First calculate the acceleration of the bus.

a = (v - u)/t; where a = acceleration, v = final velocity, u = initial velocity, and t ,= time interval

List the knowns and unknown.

List the knowns and unknown.a = ? m/s²

List the knowns and unknown.a = ? m/s²u = 0 m/s

List the knowns and unknown.a = ? m/s²u = 0 m/sv = 54 km/h × 1000 m/1 km × 1 h/3600 s = 15 m/s

t = 20 s

t = 20 sCalculate the acceleration.

t = 20 sCalculate the acceleration.a = (15 m/s - 0 m/s)/(20 s) = 0.75 m/s²

HOPE IT HELPS ! .