Question

If a bus travelling at 20 m/s is subjected to a steady declaration of 5m/s2 how long will it take to come to rest

Answer 1

Answer:

u=20m/s

a=-5m/s2

v=0

t=?

v= u +at

0=20 +(-5)× t

0=20-5t

5t=20

t=20/5

t=4sec