VB You are rowing in the boat at a constant velocity v₁ = 4.00 km/h, with a combined mass of boat and you of mB = 300 kg. A rock of mass mR = 5.00 kg is lying in in the boat. You throw the rock from the back of the boat applying a force of F = 50.0 N for a duration of t = 1.00 s. We want to find the speed of the boat v after the throw. We will neglect the air and water friction. a) Using the impulse momentum theory compute the final momentum of the rock. (2 points) b) Using the equation of conservation of momentum compute the final velocity of the boat vB. (2 points). c) Compute the total initial and total final kinetic energies of the boat+rock system. Is the kinetic energy conserved? Why? (2 points).

VB You are rowing in the boat at a constant velocity v₁ = 4.00 km/h, with a combined mass of boat and you of mB = 300 kg. A rock of mass mR = 5.00 kg is lying in in the boat. You throw the rock from the back of the boat applying a force of F = 50.0 N for a duration of t = 1.00 s. We want to find the speed of the boat v after the throw. We will neglect the air and water friction. a) Using the impulse momentum theory compute the final momentum of the rock. (2 points) b) Using the equation of conservation of momentum compute the final velocity of the boat vB. (2 points). c) Compute the total initial and total final kinetic energies of the boat+rock system. Is the kinetic energy conserved? Why? (2 points).

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 103AP: Three skydivers are plummeting earthward. They are initially holding onto each other, but then push...

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