Start typing, then use the up and down arrows to select an option from the list. ## Physics

Learn the toughest concepts covered in Physics with step-by-step video tutorials and practice problems by world-class tutors

9. Work & Energy

# Net Work & Work-Energy Theorem

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concept

## Calculating Net Work 6m
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Problem

You pull a 3kg box on a flat surface. The coefficient of kinetic friction is 0.6. When you pull the box horizontally through a distance of 10m, it accelerates at 2m/s2. Find the net work on the box.

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Problem

To pull a 51 kg crate across a rough floor, a worker applies a force of 100 N, directed 37°above the horizontal. The coefficient of friction is 0.16. If the crate moves 3.0 m, what is the total work done on the crate?

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concept

## The Work-Energy Theorem 4m
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Problem

A box slides across the floor with an initial speed of 3.5m/s. If the coefficient of kinetic friction is 0.15, how far will the box slide before stopping completely?

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example

## Net Work & Constant Speed 3m
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