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What do bicycles, doorknobs, and screwdrivers have in common? All of them use wheels and axles to pe... more
What do a doorstop, a butter knife, and the front of a boat have in common? All of them are wedges W... more
What do hammers, wheelbarrows, and brooms have in common? All of them are levers Levers are simple m... more
What do flagpoles and some window blinds have in common? They use pulleys to perform work Pulleys ar... more
What do staircases, dump truck beds, and ramps have in common? All of them are inclined planes Incli... more
What is work? You may think work is doing chores or going to a job, but you do work every time you m... more