Question

solve this problem with steps​

Answer 1

Answer:

Given:

u = 90km/hr

v = 00km/hr

s = 25m

Acc. to equations of motion,

v^2 = u^2 + 2as

0 = 8100 + 50a

-8100 = 50a

a = -162 km/hr^2 (or retardation is 162 km/hr^2)

a = v-u/t

-162 = 0-90/t

-162t = -90

t = 0.555556 hr

Hope this helps you.