A ball is dropped twice off the same initial height. trial one bounces

AI Thread Summary
The discussion centers on the impulse experienced by a ball dropped from the same height in two trials, where trial one bounces back with a velocity of 3 m/s and trial two with 2 m/s. The time of contact with the ground for trial one is 0.01 seconds. Impulse is defined as the change in momentum, which can be calculated using the velocities and the time of contact. In trial one, the impulse is greater due to the higher change in momentum compared to trial two. Consequently, the impulses are not the same; trial two experiences less impulse.
melofc
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a ball is dropped twice off the same initial height. trial one bounces back with a velocity of 3m/s and trial 2 bounces back with a velocity of 2m/s. the time the ball is in contact with the ground for trial 1 is 0.01s. are the impulses on the ball the same for both trials or is it less in trial 2?
 
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What do you think, and why?
 


How would you define the Impulse?
 


change in momentum
 
melofc said:
change in momentum
Ok. What are the momentum changes in each case? And what is the other way of specifying impulse? (Working out speeds and times is easy, from the facts you have.)
 

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