Falling Speeds: Watch a Fall

Put pictures of a falling ball in order, with an adult reading along.

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5 questions0m 0s

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Look at one ball at different times. As it falls toward a clear floor, later pictures show it lower down. The pictures are a model, not a reason to climb or jump.

Worked example

Picture 1 shows the ball near the top. Picture 4 shows it much closer to the floor. They show the same ball at different moments.

The same falling object appears at four equally spaced times. Its downward gaps increase, showing increasing speed in this ideal no-air model.

Would you believe it?

Still pictures can reveal changing speed. When snapshots are equally spaced in time, larger gaps between positions mean more distance traveled during each time step.

OpenStax: motion with constant acceleration

Question 1 Which picture shows the ball closest to the floor? Picture 4 Picture 1 Picture 2

Question 2 Do the four pictures show four balls falling at once? Yes, four different balls There is no ball No, one ball at different times

Question 3 Which way does the ball move in these pictures? Sideways only Toward the floor Away from the floor

Question 4 What is a safe way to study this fall? Point to the pictures with an adult Jump from a chair Drop a heavy object from a window

Question 5 Which picture comes first? Picture 4 All are taken at the same time Picture 1

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