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if we throw upward a ball with speed x. What can we say about it when the ball returns in the presence of air resistance? What about in the absence?
In the absence of air resistance, it's easy - the ball comes back down at the same speed that it went up with. This follows from conservation of energy; the ball started with a certain amount of kinetic energy, traded the kinetic energy for potential energy as it climbed, and then reversed the trade and regained the kinetic energy on the way down.if we throw upward a ball with speed x. What can we say about it when the ball returns in the presence of air resistance? What about in the absence?