. The student and also the skateboard have a merged mass the mc = 97 kg and the publication leaves his hand at a velocity that vb = 4.61 m/s in ~ an edge of 28° with respect to the horizontal.(a)Write an expression for the size of the velocity the the student,vs, after throw the book(b)Calculate the size of the velocity the the student,vs, in meters per second?(c)What is the magnitude of the momentum,pe, i m sorry was moved from the skateboard to the the Earth throughout the time the book isbeing thrown (in kilogram meters every second)?
Physics
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nataly862011 <7>6 month ago
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medtox.org:

a)

*
&
*

b)

*

c)

*

Explanation:

Given:

mass of the book,

*

combined massive of the student and the skateboard,

*

initial velocity the the book,

*

angle of projection of the book from the horizontal,

*

a)

velocity of the student before throwing the book:

Since the student is initially at rest and also no network force acts upon the student so it continues to be in rest according come the Newton"s first law of motion.

You are watching: A student standing on a stationary skateboard tosses a textbook

*

where:

*
initial velocity that the student

velocity that the student after throw the book:

Since the student uses a pressure on the book while throwing it and the student standing ~ above the skate will certainly an elastic collision like situation on cram the book.

*

where:

*
final velcotiy that the college student after cram the book

b)

*

*

*

c)

Since there is no activity of the student in the upright direction, so the full momentum transport to the earth will be same to the inert of the publication in vertical direction.

*

*

*


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