Question

Another engine reaches its top speed from rest in 7.5 s. It is able to perform 250,000 J of work in that time. How much power does this engine have at that time?

Answer 1

Answer:

33333.33...J

Explanation:

P=W/t

P=250000/7.5

P=33333.33 J/s or Watt

P=33.33 kW

Answer 2

The power of the engine is 33333.3 watts.

Given:

An engine reaches its top speed from rest in 7.5 s. It can perform 250,000 J of work in that time.

To Find:

The power of the engine.

Solution:

To find the power of the engine we will follow the following steps:

As we know,

Power is the ratio of work done per unit of time and its SI unit is the watt.

So,

$power = \frac{work}{time}$

As work done = 250000J

Time = 7.5s

Now,

In putting values we get,

$power = \frac{250000}{7.5} = 33333.3watt$

Henceforth, the power of the engine is 33333.3 watts.

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