Question

What is a change in momentum of car weighing 1500 kg when it's speed increases 36km/h to 72km/h uniformly

Answer 1

u=36km/h

=36×1000/3600

=10m/s

v=72km/h

=72×1000/3600

=20m/s

p1=mu

=1500×10

=15000kgm/s

p2=mv

=1500×20

=30000kgm/s

change in momentum=p2-p1

=15000kgm/s