Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Textbook Question
Chapter 3.2, Problem 2gT
Consider the change in momentum vectors you constructed for motion 1 and 2.
- How do they compare in direction? How do they compare in magnitude?
- On the basis of your answer above, compare the time that the ball spends on the ramp in motion 1 to the time it spends on the ramp in motion 2. Explain. (Hint: Can you use the impulse-momentum theorem to compare the time intervals?)
Is your answer consistent with the trajectory of the ball in each motion? Explain.
Expert Solution & Answer
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Students have asked these similar questions
Solve problem 1, 2 and 3. Solve what is asked on the problem. Show your complete and detailed solutions.
1. A 2.4-kg ball falling vertically hits the floor with a speed of 2.5 m/s and rebounds with a speed of 1.5 m/s. What is the magnitude of the impulse exerted on the ball by the floor?
2. A 4.0-kg particle is moving horizontally with a speed of 5.0 m/s when it strikes a vertical wall. The particle rebounds with a speed of 3.0 m/s. What is the magnitude of the impulse delivered to the particle?
3. A 10 kg mass traveling 2 m/s meets and collides elastically with a 2 kg mass traveling 4 m/s in the opposite direction. Find the final velocities of both objects.
A 5-kilogram block slides at 20 m/s on a smooth frictionless surface toward a
stationary sphere, shown below. The sphere is 4 times the mass of the block. The
block strikes the sphere at time t-D0. A plot of the force exerted on the CUBE by
the ball as a function of time is shown above right.
20
20 m
10
a) What is the impulse applied to the block?
Your answer
b) What is the speed of the cube immediately following the collision? (HINT:
Impulse = A momentum)
Your answer
c) What is the velocity of the cube immediately following the collision? (State
both direction and magnitude.)
Your answe
IN
Problems
1. A particle of mass m has an initial momentum vector p, =
mv, as shown. After being given a sharp blow, the
particle has a final momentum vector p, = mv,. Draw on
the figure a vector representing the impulse J that must
have been delivered to the particle by the sharp blow.
Explain your reasoning.
2°
mv 1
mv2
Chapter 3 Solutions
Tutorials in Introductory Physics
Ch. 3.1 - A block is moving to the left on a frictionless,...Ch. 3.1 - In a separate experiment, two hands push...Ch. 3.1 - Shown at right is a side-view diagram of the...Ch. 3.1 - Recall the motion of the block in part B. For each...Ch. 3.1 - Generalize from your answers to pans A—D to...Ch. 3.1 - A glider, glider A, Is pulled by a suing across a...Ch. 3.1 - The diagrams at right show two identical gliders...Ch. 3.1 - A block on a frictionless table is connected to a...Ch. 3.2 - Three students discuss the final momentum and...Ch. 3.2 - Which cart takes longer to travel between the two...
Ch. 3.2 - Use Newton's second law and the definition of...Ch. 3.2 - How does the net work done on cart A(Wnet,A)...Ch. 3.2 - Refer again to the discussion among the three...Ch. 3.2 - Release the ball so that it rolls straight toward...Ch. 3.2 - Release the ball at an angle to the ramp as shown...Ch. 3.2 - How does the direction of the net force on the...Ch. 3.2 - How does the change in kinetic energy of the ball...Ch. 3.2 - For motion 1, draw vector in region II of the...Ch. 3.2 - For motion 2, draw vectors in region II of the...Ch. 3.2 - Consider the change in momentum vectors you...Ch. 3.3 - What differences between gliders M and N could...Ch. 3.3 - For experiment 1,draw and label separate free-body...Ch. 3.3 - In the spaces provided, draw and label vectors to...Ch. 3.3 - A student compares the final speeds of gliders M...Ch. 3.3 - A. Suppose that glider D is free to move and...Ch. 3.3 - A second experiment is performed in which glider D...Ch. 3.3 - Consider the two experiments described above. When...Ch. 3.3 - When the momentum of an object or system of...Ch. 3.3 - Two students the second experiment, in which...Ch. 3.4 - Draw separate free-body diagrams for each block...Ch. 3.4 - Rank the magnitudes of all the horizontal forces...Ch. 3.4 - The velocity vectors for blocks A and B are shown...Ch. 3.4 - Use your knowledge of the velocities and changes...Ch. 3.4 - Draw and label a free-body diagram for system C at...Ch. 3.4 - Write an equation for the momentum of system C in...Ch. 3.4 - Generalize from your results to answer the...Ch. 3.4 - Imagine a single object whose mass is equal to the...Ch. 3.4 - What are the external forces exerted on system C...Ch. 3.4 - The momentum vectors of each block before the...Ch. 3.4 - Draw arrows that represent the direction of the...
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