Question

A person lifts a package weighing 75 N. If she lifts it 1.2 m off the floor, what work has she done?

Answer 1

`\boxed {\boxed {\sf 90 \ Joules}}`

Step-by-step explanation:

Work can be found by multiplying the force by the distance.

`W=f*d`

The force of the package is 75 newtons.

The distance the package is lifted off the ground is 1.2 meters.

`f= 75 \ N \\d=1.2 \ m`

Substitute the values in and multiply.

`W= 75 \ N *1.2 \ m`

`W=90 \ N*m`

1 Newton meter (N*m) is equal to 1 Joule (J).

Therefore, our answer of 90 Newton meters is equal to 90 Joules.

`W= 90 \ J`

The work done is 90 Joules.

Answer 2

The answer is 90 J

Step-by-step explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 75 × 1.2

We have the final answer as

90 J

Hope this helps you