Problem 1: An object's speed is increased by a factor of three. Part (a) How does the object's momentum change? MultipleChoice : 1) There is not enough information. 2) The momentum does not change. 3) It increases by a factor of more than three. 4) It decreases by a factor of three. 5) It decreases by a factor of more than three. 6) It increases by a factor of three. Part (b) How does the object's kinetic energy change? MultipleChoice : 1) There is not enough information to determine. 2) Doubled. 3) Halved. 4) Increased by a factor of nine.

Problem 1: An object's speed is increased by a factor of three. Part (a) How does the object's momentum change? MultipleChoice : 1) There is not enough information. 2) The momentum does not change. 3) It increases by a factor of more than three. 4) It decreases by a factor of three. 5) It decreases by a factor of more than three. 6) It increases by a factor of three. Part (b) How does the object's kinetic energy change? MultipleChoice : 1) There is not enough information to determine. 2) Doubled. 3) Halved. 4) Increased by a factor of nine.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter8: Linear Momentum And Collisions

Section: Chapter Questions

Problem 3PE: (a) At what speed would a 2.00104 -kg airplane have to fly to have a momentum of 1.60109kgm/s (the...

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A soccer player runs up behind a 0.450-kg soccer ball traveling at 3.20 m/s and kicks it in the same direction as it is moving, increasing its speed to 12.8 m/s. (a) What is the change in the magnitude of the balls momentum? (b) What magnitude impulse did the soccer player deliver to the ball? (c) What magnitude impulse would be required to kick the ball in the opposite direction at 12.8 m/s, instead? (See Section 6.1.)
A ball of mass 250 g is thrown with an initial velocity of 25 m/s at an angle of 30 with the horizontal direction. Ignore air resistance. What is the momentum of the ball after 0.2 s? (Do this problem by finding the components of the momentum first, and then constructing the magnitude and direction of the momentum vector from the components.)
(a) At what speed would a 2.00104 -kg airplane have to fly to have a momentum of 1.60109kgm/s (the same as the ship's momentum in the problem above)? (b) What is the plane's momentum when it is taking off at a speed of 60.0 m/s? (c) If the ship is an aircraft carrier that launches these airplanes with a catapult, discuss the implications of your answer to (b) as it relates to recoil effects of the catapult on the ship.
(a) What is the mass of a large ship that has a momentum of 1.60109kgm/s, when the ship is moving at a speed of 48.0 km/h? (b) Compare the ship's momentum to the momentum of a 1100-kg artillery shell fired at a speed of 1200 m/s.
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A skater is standing still on a frictionless ice rink. Her friend throws a Frisbee straight to her. In which of the following cases is the largest momentum transferred to the skater? (a) The skater catches the Frisbee and holds onto it. (b) The skater catches the Frisbee momentarily, but then drops it vertically downward, (c) The skater catches the Frisbee, holds it momentarily, and throws it back to her friend.
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