11. Momentum & Impulse
Intro to Momentum
11. Momentum & Impulse
Intro to Momentum
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- Multiple Choice
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?
- Multiple ChoiceA250 grubber ball bounces off a wall. As it strikes the wall, it is moving in the negative x-direction at,and as it bounces off, it is moving in the positive x-direction at. What is the impulse on the ball from the wall?
- Multiple ChoiceWhat is the momentum of a600 kgcar traveling at (about35 mph)?
- Multiple ChoiceThree cars approach an intersection: an 800 kg car moves in the positive x-direction at , a 1200 kg car moves in the negative x-direction at , and a 900 kg car moves in the positive y-direction at . 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.
- Open QuestionTwo 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?
- Open QuestionTwo 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.
- Open Question
(I) What is the magnitude of the momentum of a 32-g sparrow flying with a speed of 8.4 m/s?
- Open Question
(III) A sled filled with sand slides without friction down a 32° slope. Sand leaks out a hole in the sled at a rate of 2.0 kg/s. If the sled starts from rest with an initial total mass of 45.0 kg, how long does it take the sled to travel 120 m along the slope?