Which has more momentum, a #8kg# object moving at #9m/s# or a #4kg# object moving at #7m/s#?

1 Answer
Dec 29, 2015

Answer:

The one with the mass of #8# #kg# and moving #9# #m/s# has more momentum.

Explanation:

The momentum of an object can be calculated using the formula p=mv where p is the momentum and m is the mass and v is the velocity.

So, the momentum of the first object is:

#p=mv#

# =(8kg)(9m/s)#

#=72N s#

while the second object:

#p=mv#

#=(4kg)(7m/s)#

#=28N s#

So the object which has more momentum is the first object