Question

A car moving with the velocity of 15m/s comes rest after 5 sec. Calculate its retardation

Answer 1

0-15/5 = -3m/s².........

Answer 2

hello dear so here is your answer is as below


here you have asked retardation for that velocity and time is given and we have formula for retardation =v/t

v=15m/s
t=5sec

so, retardation = 15/5 = 3 m/s2

but retardation means decreasing in velocity with time ,

so your answer will be in negative

therefore ,retardation = -3 m/s2


thank you for your question and awaited for your next question and of course happy to help you because it enhances knowledge not only your but also ours.