Question

A car starts from rest and accelerates uniformaly to a speed of 72km ph over a distance of 500m. Calculate the time take to attain the speed

Answer 1

Answer:

Given

u=0

v=72 km/h=20 m/s

t=2s

a=

t

v−u

a=2

s=ut+

2

at

2

putting values

s=100m