Question

calculate the work(in joules) required to stop a car of 1500kg moving at a velocity of 108 km/h?

Answer 1

we know that w= FS...

now we convert km/ h into m/sec
108 x 1000/3600
=30m/s
W=FS
w=1500x30
w=45000 joule


I hope it's helpful for you