The initial kinetic energy of the boat and its rider is
After Sam stops it, the final kinetic energy of the boat+rider is
because its final velocity is zero.
For the law of conservation of energy, the work done by Sam is the variation of kinetic energy of the system:
where the negative sign is due to the fact that the force Sam is applying goes against the direction of motion of the boat.
Answer:
A
Explanation:
A. The pencil is on the table in broad daylight
Answer:
One piece has a north pole only, and the other piece has à soutn pole only.
Explanation:
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The answer is: Motion!
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