College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 8, Problem 10CQ
Can momentum be conserved for a system if there are external forces acting on the system? If so, under what conditions? If not, why not?
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In a perfectly ELASTIC collision between two perfectly rigid objects
O the momentum of the system is conserved but the kinetic energy of the
system is not conserved.
the kinetic energy of the system is conserved, but the momentum of the
system is not conserved.
the momentum of each object is conserved.
O both the momentum and the kinetic energy of the system are conserved.
O the kinetic energy of each object is conserved.
O None of these
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On a snow covered road, a car with mass 1.1 x 10^3 kg collides head on with a van having a mass of 2.5 x 10^3 kg traveling at 8.0m/s. As a result of the collision the vehicles lock together and immediately come to rest. Calculate the speed pf the car just before the collision. Neglect friction
Chapter 8 Solutions
College Physics
Ch. 8 - An object that has a small mass and an object that...Ch. 8 - An object that has a small mass and an object that...Ch. 8 - Professional Application Football coaches advise...Ch. 8 - How can a small force impart the same momentum to...Ch. 8 - Professional Application Explain in terms of...Ch. 8 - While jumping on a trampoline, sometimes you land...Ch. 8 - Professional Application Tennis racquets have...Ch. 8 - Professional Application If you dive into water,...Ch. 8 - Under what circumstances is momentum conserved?Ch. 8 - Can momentum be conserved for a system if there...
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- A 2000-kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain directly down into the freight car. If the speed of the loaded freight car must not go below 3.0 m/s, what is the maximum mass of grain that it can accept?arrow_forwardUnder what circumstances is momentum conserved?arrow_forwardA hockey puck of mass 150 g is sliding due east on a frictionless table with a speed of 10 m/s. Suddenly, a constant force of magnitude 5 N and direction due north is applied to the puck for 1.5 s. Find the north and east components of the momentum at the end of the 1.3-s interval.arrow_forward
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