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Can anyone solve this physics problem?
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January 19th, 2010
A 50 kg child running at 6.0 meter per second jumps onto a stationary 10kg sled. The sled is on a level frictionless surface.
Calculate the speed of the sled with the child after she jumps onto the sled.
Calculate the kinetic energy of the sled with the child after she jumps onto the sled.
After a short time, the moving sled with the child aboard reaches a rough level surface that exerts a constant frictional force of 54 newtons on the sled. How much work must be done by friction to bring the sled with the child to a stop?
Please help…
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