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Questions 20–22 refer to the following scenario:A 2 $\mathrm{kg}$ ball with a velocity of $-20 \mathrm{m} / \mathrm{s}$ collides with the wall and bounces back with a velocity of 10 $\mathrm{m} / \mathrm{s}$If the ball is in contact with the wall for 0.002 s, determine the average force experienced by the ball.(A) $3,000 \mathrm{N}$(B) $5,000 \mathrm{N}$(C) $30,000 \mathrm{N}$(D) $50,000 \mathrm{N}$

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Chapter 14

Practice Test 4

Section 1

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in this problem, we have to find the average force experienced by the ball. So here we will use impulse momentum theory. We know that f into Delta T is equal to M into Delta V. So this is the average force is equal to mass into. Delta is the final minus, the initial divided by Delta T. So this is equal to two and TV finalists. 10 and we initially is minus 20 and time is 0.2 seconds. So now we will solve this. This is equal to 30,000 Newton. So this is the average force experienced by the ball during the collision. So now we will check our options. So options see is correct. Often see is correct. Yeah, This is the answer. I hope I answered your question. Thank you.

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