Lesson: Conservation of Linear MomentumPhysics
In this lesson, we will learn how to apply the conservation of linear momentum to situations involving exchanges of momentum between objects.
Sample Question Videos
A paving truck with a mass of kg drives in a straight line at 2.5 m/s and dumps kg of gravel on the road, taking negligible time. What is the speed of the truck after dumping the gravel?
Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of kg and a velocity of , and the second having a mass of kg and a velocity of . What is their final velocity?
A figure skater whose mass is 75 kg moves at 6.2 m/s toward his partner of mass 50 kg. The skater’s partner is moving at 5.5 m/s, in the same direction as the skater. When the skater catches up with his partner, he picks her up, without exerting any horizontal forces on his skates. What speed does the skater move at while he is lifting his partner?