Join Date: Aug 2004
Location: Eastern Washington
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This was fun. It was our favorite experiment from last year's science curriculum.
you will need a plank, a toy car, some pennies, a banana, some cardboard, a thumbtack, and some books.
Slice the banana. Attach with thumb tack, one slice of banana to the cardboard. Take plank and set it up so that it is at a slight incline--the downward end should be positioned so that the toy car will run into the banana. Now, let the car go down the ramp and crash into the banana. Take note of banana status. If you need to change out the slice before the next run, go ahead. After each run, increase incline of plank with the books.
You can make a chart that has height of incline down a column and whether or not the slice of banana gets squished.
Then, once you are able to squish the banana, start over. This time, though add weight (with the pennies) to the car.
It is a great experiment to see how weight (changed with pennies) and speed (changed by adjusting the incline) affect the force of the car.
eta: I had the cardboard against the wall to receive the force of the car.
Mom to three very active girls Anna (14), Kayla (12), Maya (8).