Question

A driver changes the speed of car from 25m/s to 10m/s in 5 second . Find the acceleration of the car

Answer 1

Given,

v=10m/s

u=25m/s

t=5 s

By 1st law of motion,

v= u+at

10=25+a.5

a.5=10-25

a.5=-15

a= -15/5

=-3

Therefore the acceleration is -3 m/ s^2