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April 26, 2015

Homework Help: physics

Posted by alissa on Sunday, December 16, 2007 at 7:28pm.

work & energy homework problems:
please help me =] my teacher is bad a teaching how to do stuff =/

1)A 5.000kg plastic ball moves with a velocity of 10.00 m/s x. It collides with a second plastic ball of mass of 10.00kg at rest. The collision is completely elastic. find:
a)the initial kinetic energy of the system.
b)the final kinetic energy of the system.
c)the initial momentum of the system.
d)the final momentum of the system.
e)the final velocity of the system.
f)the final velocity of the system.

& the formula for kinetic energy is KE=1/2 mass*velocity squared

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