Quiz 2.docx - Quiz 2 Question 1 Jack and Jill exercise in a...

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Quiz 2 Question 1 Jack and Jill exercise in a 25.0-m-long swimming pool. Jack swims nine lengths of the pool in 140.1 seconds, while Jill, the faster swimmer, covers ten lengths in the same time interval. Find the average speed of each swimmer. Answers: Selected Answer: d. Jack 1.61 m/s and Jill 1.78 m/s a. Jack 5.60 m/s and Jill 6.22 m/s b. Jack 6.22 m/s and Jill 5.60 m/s c. Jack 1.78 m/s and Jill 1.61 m/s d. Jack 1.61 m/s and Jill 1.78 m/s
Response Feedback: Correc t! Question 2 Kinematics can be defined as the study of motion without considering its causes. Answers:
Response Feedback: Correc t! Question 3 Find the following for path B in Figure 2-59 : (a) The distance traveled. (b) The magnitude of the displacement from start to finish. (c) The displacement from start to finish. Figure 2-59
Answers:
Response Feedback: Correc t! Question 4 The speed of propagation of the action potential (an electrical signal) in a nerve cell depends (inversely) on the diameter of the axon (nerve fiber). If the nerve cell connecting the spinal cord to your feet is 1.1 m long, and the nerve impulse speed is 18 m/s, how long (in seconds) does it take for the nerve signal to travel this distance? Answers:
c.

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