11. Momentum & Impulse

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Momentum (2 of 16) Momentum and Force

Anderson Video - Momentum and Rocket Propulsion

Momentum Introduction

What is the momentum of a 600 kg car traveling at <math display=“inline”><mrow><mn>16</mn><mo rspace="thickmathspace">&#x2062;</mo><mtext>m/s</mtext></mrow></mrow></math>  (about 35 mph)?

Momentum

Physics introduction: momentum and impulse for an accelerating cart using final and initial momentum

Momentum in 2D

A 250 g rubber ball bounces off a wall. As it strikes the wall, it is moving in the negative x-direction at <math display=“inline”><mrow><mn>11</mn><mo rspace="thickmathspace">&#x2062;</mo><mtext>m/s</mtext></mrow></mrow></math>, and as it bounces off, it is moving in the positive x-direction at <math display=“inline”><mrow><mn>10</mn><mo rspace="thickmathspace">&#x2062;</mo><mtext>m/s</mtext></mrow></mrow></math>. What is the impulse on the ball from the wall?

Two vehicles are approaching an intersection. One is a 2500-kg pickup traveling at 14.0 m/s from east to west (the -x-direction), and the other is a 1500-kg sedan going from south to north (the +y-direction) at 23.0 m/s. (b) What are the magnitude and direction of the net momentum?

Impulse and Momentum

Two vehicles are approaching an intersection. One is a 2500-kg pickup traveling at 14.0 m/s from east to west (the -x-direction), and the other is a 1500-kg sedan going from south to north (the +y-direction) at 23.0 m/s. (a) Find the x- and y-components of the net momentum of this system.

How fast would you have to throw a 150-g rock for it to have the same momentum as a 10-g sniper rifle bullet traveling at 900 m/s?

Momentum as a Vector

Three cars approach an intersection: an 800 kg car moves in the positive x-direction at <math display=“inline”><mrow><mn>10</mn><mo rspace="thickmathspace">&#x2062;</mo><mtext>m/s</mtext></mrow></mrow></math>, a 1200 kg car moves in the negative x-direction at <math display=“inline”><mrow><mn>5</mn><mo rspace="thickmathspace">&#x2062;</mo><mtext>m/s</mtext></mrow></mrow></math>, and a 900 kg car moves in the positive y-direction at <math display=“inline”><mrow><mn>12</mn><mo rspace="thickmathspace">&#x2062;</mo><mtext>m/s</mtext></mrow></mrow></math>. What is the total momentum of this system of three cars? Give your answer as a magnitude and an angle counterclockwise from the positive x-axis.

Anderson Video - Momentum and Force

Momentum (1 of 16) An Explanation

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