Class Management Help HW 2 Begin Date: 1/19/2017 12:01:00 AM Due Date: 2/3/2017

Question

Class Management Help HW 2 Begin Date: 1/19/2017 12:01:00 AM Due Date: 2/3/2017 11:59:00 PM End Date: 5/31/2017 10:00:00 AM 1.05 kg to a friend standing in front of him. The student and the skateboard have a combined mass of 71 kg and the book leaves his hand at a velocity of vb- 3.92 m/s at an angle of 41° with respect to the horizontal Randomized Variables mb, 1.05 kg 71 kg vb 3.92 m/s GA 33% Part (a) write an expression for the magnitude of the velocity of the student. v after throwing the book. Grade Summary Deductions Potential 100% cos(a) cos(p) cost(e) 7 8 9 4 5 6 Submissions E per attempt) detailed view I give Feedback: 0% deduction per feedback. Hints: 2% deduction per hint. Hints remaining 3 A 33% Part Calculate the magnitude of the velocity of the student, v in meters per second? time the i A 33% Part (c) What is the magnitude of the momentum, pe transferred from the skateboard to the the Earth during the which was book is being thrown (in kilogram meters per second?

Explanation / Answer

part a )

here momentum remain conserve in x direction

mb * vb * cos41 = mc*v

part b )

v = 0.04375 m/s

part c )

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