Question

Answer this question

Answer 1

u=54 km/h

=15m/s

When brakes are applied the car comes to rest ie, final velocity will be 0

v=0

s=7.5m

Using the equation we can find acceleration

2as=v^2-u^2

a=(v^2-u^2)/2s

a=(0-(15*15)/2*7.5

a=-225/15

a=-15m/s^2

Hope it helps........

plse mark me as brainliest...

Answer 2

Answer:

the first figure is of this question and the second figure is of your rationlising question which I done wrong