Question

6. A train moving with a velocity of 20 m s' is brought
to rest by applying brakes in 5 s. Calculate the
Ans. 4 m 2
retardation.​

Answer 1

Given,

u= 20 m/s

v= 0 m/s

time = 5 sec

a = ?

Formula ,

a= v-u / t

= 0 - 20 /5

= - 4 m/s2

ye retardation puchh rha hai esliye ye minus me aayega toh wo saaf bata dega ki retardation hai