Which of the following describes the relationship between work and power?

Physics

1 answer:

Vinvika [58]4 years ago

6 0

Answer: The answer is B

Explanation:

Work can be defined as the energy that is required to apply a force to an object in order to move it from one point to another. In physics, work = force x distance travelled. On the other hand, Power is the work done per time. In other words, it the rate at which work is done and is determined by using the formula, Power = Work/time. In these relationships, it can be seen that power is directly proportional to the amount of work done, hence as power increases, more work is done.

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Answer:

a)43.8 m/s

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Explanation:

Work energy theorem

Δ $E_{k}=$ Δ $E_{g}$

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a) In this part v1=0 and h2=0

$\frac{1}{2} mv^{2}_{2}- \frac{1}{2} mv^{2}_{1}+ mgh_{2}- mgh_{1} = 0\\\\\\\\\v_{2} =\sqrt{2gh_{1}} = \sqrt{2*9.8*98} =43.8 m/s$ =0

b) in this part v2=0, h1= 0, and h2= 545m

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3 years ago

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lorasvet [3.4K]

Answer:

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Explanation:

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3 years ago

An airplane flies with a constant speed of 720 km/hr. How long will it take to travel a distance of 1440 km? Please show your wo

choli [55]

Answer:

2 h

Explanation:

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