Question

amit wants to fire a bullet from a motorcycle If the speed of motorcycle is 20 m/s find the initial velocity of bullet if it takes 20 sec to stop at a retardation of 2 m/s square​

Answer 1

Answer:

Hay mate here is your answer...

Solution: finally velocity=20m/s(v)

initial velocity=?(u)

time =20s

acceleration or retardation=2m/s square

v=u+at

putting value,

20=u+2×20

20=u+40

u=40-20

u=20m/s

hope it is not helpful for you