Question

A car moving at a velocity of 20ms-1 comes to rest in 20s after application of breaks.Find Acceleration

Answer 1

Answer:

here u=20m/s

t=20s

v=0m/s

a=?

by applying the formula

v=u+at

0=20+a*20

0=20+20a

-20=20a

a= -1

SO -1 is the correct ans for the question given

hope it helps