15) A 1.0 kg ball is tied to the end of a 2.5 m string to form a pendulum. The pendulum is released from rest with the rope extended horizontally. At the lowest point of the trajectory when the ball is moving horizontally, it elastically collides with a 2.0 kg block initially at rest on a horizontal frictionless surface. What is the speed of the block just after the collision? Answers: a) 2.3 m/s b) 4.7 m/s c) 3.5 m/s d) 3.0 m/s e) 7.0 m/s
15) A 1.0 kg ball is tied to the end of a 2.5 m string to form a pendulum. The pendulum is released from rest with the rope extended horizontally. At the lowest point of the trajectory when the ball is moving horizontally, it elastically collides with a 2.0 kg block initially at rest on a horizontal frictionless surface. What is the speed of the block just after the collision? Answers: a) 2.3 m/s b) 4.7 m/s c) 3.5 m/s d) 3.0 m/s e) 7.0 m/s
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter8: Momentum And Collisions
Section: Chapter Questions
Problem 9OQ
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15) A 1.0 kg ball is tied to the end of a 2.5 m string to form a pendulum. The pendulum is released from rest with the rope
extended horizontally. At the lowest point of the trajectory when the ball is moving horizontally, it elastically collides with a 2.0 kg block initially at rest on a horizontal frictionless surface. What is the speed of the block just after the collision?
Answers:
a) 2.3 m/s
b) 4.7 m/s
c) 3.5 m/s
d) 3.0 m/s
e) 7.0 m/s
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