Exercise 8.18 A 65.5kg astronaut is doing a repair in space on the orbiting spac

Question

Exercise 8.18 A 65.5kg astronaut is doing a repair in space on the orbiting space station. She throws a 2.40kg tool away from her at 350m/s relative to the space station. Part A With what speed will she begin to move? Submit Give Up Part B In what direction will she begin to move? opposite to the direction in which she throws the tool to the direction in which she throws the tool Give UP Submit Exercise 8.4 Two vehicles are approaching an intersection. One is a 2400kg pickup traveling at 170m/s from east to west (the -x- direction), and the other is a 1600kg sedan going from south to north (the +y- direction at 25.0m/s). Part A Find the r -component of the net momentum of this system. kg-m/s Give Up Submit Part B Find the y component of the net momentum of this system. kg m/s Give Up Submit Part C Part A What is the magnitude of the momentum of a truck of mass I 45x IO kg whose speed is 5m/s kg m/s Give Up Submit Part B What speed would a sport utilitiy vehicle of mass 2500kg have to attain in order to have the same momentum? Submit Give Up Part C What speed would a sport utility vehicle of mass 2500kg have to attain in order to have the same kinetic ener m/s Find the y component of the net momentum of this system. kg m/s Give Up Submit Part C What is the magnitude of the net momentum? kg m/s Give Up Submit Part D What is the direction of the net momentum? west of north. Give U

Explanation / Answer

1. V_wrench = 3.50 m/s
M_wrench = 2.4 kg
V_astro = x
M_astro = 65.5

2.4 * 3.50 = 65.5 * x
x = 0.128 m/s
She goes the opposite direction to the tool.

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