Question

A truck running at 90 km/h, is brought to
rest over a distance of 25 m. Calculate
the retardation and time for which brakes
are applied.
​

Answer 1

Answer:

Hey there,

Initial velocity, u = 90km/h

u = 25m/s

Final velocity,

v = 0m/s

Distance,

s = 25m

Now using,

v^2 = u^2 + 2as

0 = 25×25 + 2×25×a

50a = - 625

a = - 1.25 m/s^2

This negative sign denotes retardation

also,

v = u + at

0 = 25 - 1.25t

1.25 t = 25

t = 20 seconds

Hope it helps you

Please mark it as branliest

Answer 2

Answer:

hi Sachin How are you and take care

Explanation:

good night have a nice dream dear