French, asked by jkjkjk54, 9 months ago

Q.: A motorcar is moving with a velocity of 108 km/h and it takes 4 s to stop 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.

No spam or Copied answers.​

Answers

Answered by dvankadi
1

Explanation:

u=108km/h=(108×1000)/3600m/s=30m/s

v=0

t=4s

v=u+at

0=30+a×4

a=-30/4

a=-7.5m/s^2

force=mass×acceleration

F=1000×(-7.5)=-7500N

negative sign indicates that force is decreasing

Similar questions