Increasing Force to Move Heavier Objects

Last Thursday we took on a new challenge.  We wondered: What do we have to do to move heavier objects?  We worked in three stations.  In the first, we timed how long it took to push a crate of paper towels and a crate of notebooks the same distance.  In the second, we rolled a baseball, a whiffle ball, and a tennis ball down a ramp to push a wooden car.  We measured which ball moved the cars the furthest.  In the third, we blew on a wooden block and a foam block.  We discovered that we need to use more force to move heavier objects and that more force — in the case of the baseball and toy car — makes an object move further.

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