CAPA 4 - gaitons Set 4, Due Tue, Feb 26, 2008 at 23:59 1....

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gaitons Set 4, Due Tue, Feb 26, 2008 at 23:59 1. 1 . [1 point, 10 tries] A 55.0 g tennis ball with an initial speed of 27.4 m/s hits a wall and rebounds with the same speed. The figure below shows the force of the wall on the ball during the collision. What is the value of F max , the maximum value of the contact force during the collision, if the force is applied for t i =16.8 ms? Answer: 2.69e+02 N 2. 2 . [1 point, 10 tries] Far in space, where gravity is negligble, a 464.0 kg rocket travelling at 93.5 m/s fires its engines. The thrust force is shown as a function of time below. The mass lost by the rocket during the t i =30.0 s is negligible. What impulse does the engine impart to the rocket if the maximum thrust force is 1422.0 N?
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Answer: 2.13e+04 N*s 3. 3 . [1 point, 10 tries] At what time does the rocket reach its maximum speed? Answer: 3.00e+01 s 4. 4 . [1 point, 10 tries] What is the maximum speed of the rocket? Answer: 1.39e+02 m/s 5. 5 . [1 point, 10 tries] A 114.0 g ball is dropped from a height of 2.03 m, bounces on a hard floor, and rebounds to a height of 1.86 m. The impulse received from the floor is shown below. What maximum force does the floor exert on the ball if it is exerted for 6.00 ms?
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This note was uploaded on 07/23/2008 for the course SCIENCE PHYSICS 1B taught by Professor Hughes during the Winter '08 term at McMaster University.

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CAPA 4 - gaitons Set 4, Due Tue, Feb 26, 2008 at 23:59 1....

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