© Dr. Steve Rapp, 2004

Sample Problems

uWhat
is the momentum of a 15 kg bicycle moving at 12 m/s?

up=mv = 15 kg (12 m/s) = 180 kg m/s

uA
bullet with a mass of .0025 kg has a momentum of 1.8 kg m/s. What is the magnitude of its
velocity?

uv= p/m = __1.8 kg m/s __ = 720 m/s

.0025 kg