Fireworks change _____ into ______ and ________ energy.
1 answer:
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Answer:
Impulse of force = 300Ns
Explanation:
Given the following data;
Mass = 25kg
Change in velocity = 12m/s
To find the impulse;
Impulse is given by the formula;
Substituting into the equation, we have;
Impulse of force = 300Ns
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
Learn more about power:
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