The ratio between power of A and power of B is 2
Explanation:
In physics, power is defined as the ratio between the work done and the time taken to do the work:
where
P is the work done
t is the time taken
In this problem, we have:
Person A and person B do the same amount of work --> let's call this work W
Person A does this work in a time of 
, so the power delivered by A is
Person B does this work in a time of 
, so the power delivered by B is
So, the ratio of the powers delivered by the two persons is
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Work done is equal to the force times the distance over which that force acts (provided they are parallel vectors) In symbols we say:
Since gravity acts downward and the elevator goes upward, the dot product is reduced to a simple multiplication problem. First we need the downward force of the elevator, which is the weight according to F=ma. F=1500kg*9.81m/s^2=14715N. Then W=14715N*100m=1471500J, or 1.4715MJ
I think these forms are called isotopes of each other.
Impulse is a vector quantity. It has the same units as momentum.
Answer:
i think its the third one or second one
