The Earth exerts the necessary centripetal force on an orbiting satellite to kee
ID: 2144434 • Letter: T
Question
The Earth exerts the necessary centripetal force on an orbiting satellite to keep it moving in a circle at constant speed. Which one of the following statements best explains why the speed of the satellite does not change although there is a net force exerted on it?
The centripetal force has magnitude mv2/r.
The satellite is in equilibrium.
The centripetal force is always perpendicular to the velocity.
The centripetal force is canceled by the reaction force.
The acceleration of the satellite is zero m/s2.
a.The centripetal force has magnitude mv2/r.
b.The satellite is in equilibrium.
c.The centripetal force is always perpendicular to the velocity.
d.The centripetal force is canceled by the reaction force.
e.The acceleration of the satellite is zero m/s2.
Explanation / Answer
(e) The centripetal force is always perpendicular to the velocity.
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