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The drag force on an object is basically friction as something moves through an atmosphere.
The drag force on an object is basically friction as something moves through an atmosphere. The amount of the force is typically proportional to the speed of the object or the speed of the object squared. If an object has had a drag force acting on it for a while it reaches terminal velocity which occurs when the magnitude of the drag force is equal to its weight (for something moving through the atmosphere, not on the ground) and it moves at a constant velocity.
Suppose on a distant planet, a rock with mass of 0.22 kg is moving at its terminal velocity at a height of 51 meters above the surface of the planet and when it reaches 20 meters above the ground (still traveling at its terminal velocity), it loses 103 Joules of energy due to the drag force. In terms of g on Earth, what is g (the gravitational acceleration) on this planet?
