- #1
pivoxa15
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Homework Statement
A trolley of mass 2.4Kg is moving along a smooth horizontal surface with a constant speed of 2.0m/s when a brick of mass 1.5Kg is dropped vertically on to it.
What is the change in momentum of the trolley?
Homework Equations
Impulse: F(delt)=m(delv)
momentum: mv
The Attempt at a Solution
I don't understand the question very well. As far as I can see there isn't enough data. I don't know how fast the trolley is moving after the brick has landed. Conservation of momentum can't be used because I don't know the initial momentum.