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lys-0071 [83]
3 years ago
11

jim(mass=100kg) rollerblades on a smooth horizontal floor at a constant speed of 2.0 m/s for a distance of 5m in 5 seconds. What

is the power in this process? (assume g is 10 m/s^2)
Physics
1 answer:
azamat3 years ago
7 0
Since Jim's speed is constant and he is moving in a straight line, he is not accelerating, and we know the net force on him is zero. There is no Force anywhere doing any work. So no power is being added to him or dissipated by him.
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An astronaut on the moon places a package on a scale and finds its weight to be 10. N. () What would the weight of the package
jeka94

Answer:

(a) 61.25 N

(b) 6.25 kg

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Explanation:

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(a) Weight on earth = mass x acceleration due to gravity on earth

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