When air resistance is ignored, it is straightforward to calculate the travel ti

Question

When air resistance is ignored, it is straightforward to calculate the travel time interval for a Ping-Pong ball tossed up into the air and caught on its way down because the acceleration can be taken to be a constant 9.8 m/s2 downward. However, a more accurate result is obtained when air resistance is taken into account.

Part A: When air resistance is taken into account, is the magnitude of the ball's acceleration greater than, less than, or the same as when air resistance is ignored as the ball rises? Ignore the buoyant force.

Part B

When air resistance is taken into account, is the magnitude of the ball's acceleration greater than, less than, or the same as when air resistance is ignored as the ball falls? Ignore the buoyant force.

Explanation / Answer

A] greater than, Magnitude of acceleration increases, i.e. retardation increases as resistance opposes the motion.

b] less than, Magnitude of acceleration decreases as resistance opposes the motion.

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