1. After watching the video clip, why do the feather and hammer fall at the same
rate on the Moon?
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There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

When solid surfaces slide over each other the kind of friction that occurs is called friction

The smallest particle of an element that retains its identity in a chemical reaction. true or false