11. Momentum & Impulse

Intro to Momentum

Multiple Choice
Which of the following objects has the greatest momentum?
Multiple Choice
A cart with mass $0.250 k g$ is moving at a velocity of $0.400 m / s$ . What is its momentum?
Textbook Question
The force on a particle of mass m is given by $\vec{F} = 26 \vec{i} - 12 t^{2} \vec{j}$ where F is in N and t in s. What will be the change in the particle’s momentum between t = 1.0 s and t = 2.0 s?
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Multiple Choice
In introductory mechanics, what is the relationship between an object's momentum and its velocity (for constant mass)?
Multiple Choice
What is the momentum of a $5 kg$ object that has a velocity of $1.2 \frac{m}{s}$ ?
Textbook Question
What is the magnitude of the momentum of a 32-g sparrow flying with a speed of 8.4 m/s?
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Multiple Choice
Three cars approach an intersection: an 800 kg car moves in the positive x-direction at $10 m/s$ , a 1200 kg car moves in the negative x-direction at $5 m/s$ , and a 900 kg car moves in the positive y-direction at $12 m/s$ . 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.
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Multiple Choice
If Car A has a mass of 1500 kg and is traveling at a velocity of 20 m/s, what is the momentum of Car A in a collision?
Multiple Choice
What is the magnitude of the momentum of a 28 g sparrow flying with a speed of 8.4 m/s?
Multiple Choice
A 0.10 kg ball, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19 m/s. What is the magnitude of the change in the momentum of the ball during the rebound?
Textbook Question
A particle of mass m is at rest at t = 0. Its momentum for t > 0 is given by p_x = 6t² kg m/s, where t is in s. Find an expression for F_x(t), the force exerted on the particle as a function of time.