Today one of my must dos was this science experiment. These are the instructions.
1: Measure out 2 metres and mark the start of it and the end of it.
2: Role a tennis ball on the wooden floor and time it with the stop watch.
3: Repeat it on carpet and concrete.
Our time was for the wooden floor 1.89 seconds, carpet 2.01 and concrete 1.11
The different surfaces may have slowed the ball down or sped it up.
The surfaces might not be level.
David
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