9.1 Linear Momentum
Mass times velocity as a vector, how it differs from kinetic energy as a measure of motion, and computing it for a single moving body.
3 exercises
9.1 Exercise 1
An object that has a small mass and an object that has a large mass have the same momentum. Which object has the largest kinetic energy?
9.1 Exercise 4
A skater of mass 40 kg is carrying a box of mass 5 kg. The skater has a speed of 5 m/s with respect to the floor and is gliding without any friction on a smooth surface.
- Find the momentum of the box with respect to the floor.
- Find the momentum of the box with respect to the floor after she puts the box down on the frictionless skating surface.
9.1 Exercise 8
What is the average momentum of an avalanche that moves a 40-cm-thick layer of snow over an area of 100 m by 500 m over a distance of 1 km down a hill in 5.5 s? Assume a density of 350 kg/m3 for the snow.
Adapted from University Physics Volume 1 © 2016 Rice University. Licensed under CC BY 4.0. Source: University Physics Volume 1. Imported at revision db44eb9.