24: Module 4Use the following information to answer questions 20 and 21.Assignment Booklet 4BTwo cars, each with a mass of 1000 kg, are travelling in opposíte directions. Thecar travelling to the right is travelling 30 m/s, and the car travelling to the left istravelling 20 m/s.1000 kg30 m/s1000 kg20 m/sart20. What is the total momentum of the vehicles after they collide?A. -50 000 kg•m/sB. 50 000 kg•m/sC. -10 000 kg.m/sD. 10 000 kg-m/s21. If the two vehicles colide and lock together, what is their velocity afterthe collision?A. -5 m/sB. 5 m/sC. -10 m/sD. 10 m/sReturn to page 70 of the Student Module Booklet and begin theSection 3 Review.

Given data: The mass of the cars m1 = m2 = 1000 kg Initial velocity of first car (u1) = +30 m/s…

Two to answer questions 20 and 21. cars, each with a mass of 1000 kg, are travelling in opposíte directions. The car travelling to the right is travelling 30 m/s, and the car travelling to the left is travelling 20 m/s. 1000 kg 30 m/s 1000 kg 20 m/s 20. What is the total momentum of the vehicles after they collide? A. -50 000 kg-m/s B. 50 000 kg.m/s C. -10 000 kg-m/s D. 10 000 kg.-m/s 21. If the two vehicles collide and lock together, what is their velocity after the collision? A. -5 m/s B. 5 m/s C. -10 m/s D. 10 m/s

Two to answer questions 20 and 21. cars, each with a mass of 1000 kg, are travelling in opposíte directions. The car travelling to the right is travelling 30 m/s, and the car travelling to the left is travelling 20 m/s. 1000 kg 30 m/s 1000 kg 20 m/s 20. What is the total momentum of the vehicles after they collide? A. -50 000 kg-m/s B. 50 000 kg.m/s C. -10 000 kg-m/s D. 10 000 kg.-m/s 21. If the two vehicles collide and lock together, what is their velocity after the collision? A. -5 m/s B. 5 m/s C. -10 m/s D. 10 m/s

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter9: Momentum And Its Conservation

Section9.1: Impulse And Momentum

Problem 13SSC

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a man of mass m1 = 70.0 kg is skating at v1 = 8.00 m/s behind his wife of mass m2 = 50.0 kg, who is skating at v2 = 4.00 m/s. Instead of passing her, he inadvertently collides with her. He grabs her around the waist, and they maintain their balance. (a) Sketch the problem with before-and-after diagrams, representing the skaters as blocks. (b) Is the collision best described as elastic, inelastic, or perfectly inelastic? Why? (c) Write the general equation for conservation of momentum in terms of m1, v1, m2, v2, and final velocity vf. (d) Solve the momentum equation for vf. (e) Substitute values, obtaining the numerical value for vf, their speed after the collision.
An elephant and a hunter are having a confrontation. a. Calculate the momentum of the 2000.0-kg elephant charging the hunter at a speed of 7.50 m/s. b. Calculate the ratio of the elephant’s momentum to the momentum of a 0.0400-kg tranquilizer dart fired at a speed of 600 m/s. c. What is the momentum of the 90.0-kg hunter running at 7.40 m/s after missing the elephant?
(a) What is the momentum of a garbage truck that is 1.20104 kg and is moving at 10.0 m/s ? (b) At what speed would an 8.00-kg trash can have the same momentum as the truck?
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a man of mass m1 = 70.0 kg is skating at v1 = 8.00 m/s behind his wife of mass m2 = 50.0 kg, who is skating at v2 = 4.00 m/s. Instead of passing her, he inadvertently collides with her. He grabs her around the waist, and they maintain their balance. (a) Sketch the problem with before-and-after diagrams, representing the skaters as blocks. (b) Is the collision best described as elastic, inelastic, or perfectly inelastic? Why? (c) Write the general equation for conservation of momentum in terms of m1, v1, m2, v2, and final velocity vf. (d) Solve the momentum equation for vf. (e) Substitute values, obtaining the numerical value for vf, their speed after the collision.
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.
An estimated force vs. time curve for a baseball struck by a bat is shown in Figure P6.8. From this curve, determine (a) the impulse delivered to the ball and (b) the average force exerted on the ball.
A car and a large truck traveling at the same speed collide head-on and stick together. Which vehicle undergoes the larger change in the magnitude of its momentum? (a) the car (b) the truck (c) the change in the magnitude of momentum is the same for both (d) impossible to determine without more information.
A model rocket engine has an average thrust of 5.26 N. It has an initial mass of 25.5 g, which includes fuel mass of 12.7 g. The duration of its burn is 1.90 s. (a) What is the average exhaust speed of the engine? (b) This engine is placed in a rocket body of mass 53.5 g. What is the final velocity of the rocket if it were to be fired from rest in outer space by an astronaut on a space-walk? Assume the fuel burns at a constant rate.
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