Calculate the average speed of a gazelle that runs 140 meters in 5.0 seconds

Physics

1 answer:

bekas [8.4K]3 years ago

3 0

140 m / 5 s = 28 meters per second

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Anna applies a force of 19.5 newtons to push a book placed on a table. If the normal force of the book is 51.7 newtons, what is

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Considering that the book is moving with constant speed, the force applied by Anna must be the same that the friction force:

$F = F_R = F\cdot \mu_k\cdot N$

If we clear the previous equation:

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