A student uses 80 joules of energy to lift a backpack in a time of 0.75 seconds. How much power does the student have?

P = 106.7 W

Explanation:

Given that,

Work done in lifting a backpack, W = 80 J

It is lifted in 0.75 seconds

We need to find the power of the student. The power of an object is defined as work done per unit time. So,

Put all the values,

So, the power of the student is 106.7 W.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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