Phrank has a mass of 80 kg and runs across the front of the classroom with a speed of 4 m/s, then jumps onto a giant skateboard. Th skateboard is initially at rest and has a mass of 5 kg, however your friend Phrancine is sitting on the board. What must Phrancine's mass be for the skateboard and team to go off at half the original speed, namely at a velocity of 2 m/s? Friction with the floor is negligible. O O O O 35 kg 75 kg 80 kg 40 kg None of these are correct

Phrank has a mass of 80 kg and runs across the front of the classroom with a speed of 4 m/s, then jumps onto a giant skateboard. Th skateboard is initially at rest and has a mass of 5 kg, however your friend Phrancine is sitting on the board. What must Phrancine's mass be for the skateboard and team to go off at half the original speed, namely at a velocity of 2 m/s? Friction with the floor is negligible. O O O O 35 kg 75 kg 80 kg 40 kg None of these are correct

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 15P

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Initially, ball 1 rests on an incline of height h, and ball 2 rests on an incline of height h/2 as shown in Figure P11.40. They are released from rest simultaneously and collide elastically in the trough of the track. If m2 = 4 m1, m1 = 0.045 kg, and h = 0.65 m, what is the velocity of each ball after the collision?
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A block with mass m1 = 0.500 kg is released from rest on a frictionless track at a distance h1, = 2.50 m above the top of a table. It then collides elastically with an object having mass m2 = 1.00 kg that is initially at rest on the table, as shown in Figure P6.71. (a) Determine the velocities of the two objects just after the collision. (b) How high up the track does the 0.500-kg object travel back after the collision? (c) How far away from the bottom of the table does the1.00-kg object land, given that the height of the table h2 = 2.00 m? (d) How far away from the bottom of the table does the 0.500-kg object eventually band? Figure P6.71
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