Question

how much work is done if a person pushed a box across a frictionless surface using 75N for a distance of 20m?​

Answer 1

The work done by the person the box across the frictionless surface is 1.5 × 10³J

Given the data in the question

• Force used in pushing the box; $f = 75N$

• Distance the box was pushed; $d = 20m$

• Work done $W = ?$

Work done the measure of energy transfer that happens when we move an object over a certain distance as a result of an external force being applied in the direction of the displacement.

Work done is calculated by simply multiplying the force applied and the distance moved in the direction of the displacement.

$Work\ done = Force\ * \ Distance$

We substitute in our given values

$W = 75N \ *\ 20m$

$W = 1500J\\\\W = 1.5*10^3J$

Therefore, the work done by the person the box across the frictionless surface is 1.5 × 10³J

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