hannahbrown889
27.07.2019 •
Chemistry
What is the total displacement of a dog that runs north 80 meters to chase a ball, returns to its master, and runs south 20 meters
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Ответ:
Ответ:
There are three forces acting on the skateboard. One of these forces is the weight of the rider. Another is the force of gravity on the board itself. The third is the force of the ground pushing up on the skateboard.