Exam #2 (S05) - MC

# Exam#2(S05 MC - Multiple Choice25Questions Please writeyouranswers inthespaceprovided 1 x2pts=#correct score A bob vibrates up and down on a

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Multiple Choice –  25 Questions                   x 2pts =                  Please write your answers in the space provided. # correct score 1. A bob vibrates up and down on a vertical spring. If the period of the motion is two seconds, the frequency is A. also two seconds B. one-half cycle per second C. one cycle per second D. two cycles per second 2. What is the gravitational potential energy of a ball with a weight of 100 N when it is sitting on a shelf 2 m above the floor? Assume the potential energy is zero on the floor. A. zero B. 100 J C. 200 J D. 400 J 3. Which of the following properties of a ball is conserved as it falls freely in a vacuum? A. kinetic energy B. gravitational potential energy C. momentum D. mechanical energy 4. Two wave pulses are sent down a very long rope. The first wave is smaller than the second one. Which of the following is true? The bigger wave will A. not catch the smaller one since the bigger wave has a smaller speed. B. not catch the smaller one since wave speeds are independent of pulse size. C. catch the smaller one since the bigger wave has a larger speed. 5. Increasing which of the following increases the period of a mass on a spring? A. mass B. amplitude C. spring constant D. strength of gravity 6. A radio-controlled car moving in a straight path increases its kinetic energy from 4 J to 10 J over a distance of 2 m. What was the average net force on the car during this interval? A. 3 N

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## This document was uploaded on 10/29/2011 for the course PHSX 103 at MSU Bozeman.

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Exam#2(S05 MC - Multiple Choice25Questions Please writeyouranswers inthespaceprovided 1 x2pts=#correct score A bob vibrates up and down on a

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