Question

A motorcar is moving with a
city of 108 km/h and it takes 4 s to
after the brakes are applied.
Calculate the force exerted by the
brakes on the motorcar if its mass along
with the passengers is 1000 kg.​

Answer 1

Answer:

u =108km\h= 30m\s,

v=0,

a=v-u\t

a=-15\2

F=m×a

=1000×-15\2

-7500N

Hence,the applied force is 7500 N

Answer 2

Answer:

Applied force is 7500n