Roll a ball off a table. At the very instant the rolling ballleaves the table, d

Question

Roll a ball off a table. At the very instant the rolling ballleaves the table, drop a second ball from the same height above thefloor.

Do the two balls hit the floor at the same time?

Try varying the speed at which you roll the ball off thetable. Does this change affect the time at which the ballsstrike the floor?

Finally, roll one of the balls down an incline, and drop the otherball from the base of the incline at the instant the first ballleaves the slope. Which of these balls hits the floor firstin this situation? Explain the reasoning behind yourobservations.

Explanation / Answer

Hi,     In the first case both balls will reach at sametime. because both the balls has zero intial vertical velocity.     In the second the ball left the inclined planehave some initial vertical downward velocity. so this ball willreach the ground earlier than the ball dropped freely. Hope this helps you.

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