Question

a truck of mass 1800 kg is moving with velocity 54 km per hour and deaccelerates and comes to rest after travelling 200 m
find the the force applied by brakes and ud work done​

Answer 1

Answer:

m=1800 kg

u = 54 kmph = 15 m/s

v=0  

s=200 m

a=v²-u²/2s

a=0-225/400

a=-0.5625m/s²

f=ma

f=1800*-0.5625

f=1012.5 N

w=fs

w=1012.5*200

w=202500 J

hope it helps u