If a satellite moves with constant speed in a perfectly circular orbit around the earth, what is the direction of the acceleration of the satellite?

A) in the forward direction
B) in the backward direction
C) outward away from the earth
D) inward toward the earth
E) The acceleration is zero because the speed is constant.


D

Physics & Space Science

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A horizontal force of 1000 N is needed to overcome the force of static friction between a level floor and a 250-kg crate. If g = 9.8 m/s2, what is the coefficient of static friction?

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