Clicker Questions - velocity

Clicker Questions - velocity - 4 The two bees have the same...

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Q1 A bee flies in a straight line at constant speed. At 15 s after 9 AM, the bee's position is < 2, 4, 0> m. At 15.5 s after 9 AM, the bee's position is < 3, 3.5, 0> m. What is the average velocity of the bee? 1) < 0.129, -0.065, 0 > m/s 2) < 0.133, -0.067, 0 > m/s 3) 2.236 m/s 4) < 0.500, -0.250, 0 > m/s 5) < 2.000, -1.000, 0 > m/s
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Q2: At 15 s after 10 AM two bees are observed to be at position < 2, 4, 0> m. Bee #1 flies in a straight line with constant speed and arrives at position <3, 3.5, 0 > m at 15.5 s after 10 AM. Bee #2 buzzes around, repeatedly changing speed and direction, sometimes going quickly and other times just hovering in the air, but it also arrives at position < 3, 3.5, 0 > m at 15.5 s after 10 AM. Which statement about their average velocities is correct? 1) The magnitude of Bee #1's average velocity is greater. 2) The magnitude of Bee #2's average velocity is greater. 3) The two bees have the same velocity at all times.
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Unformatted text preview: 4) The two bees have the same average velocity although their velocity at a given time may not be the same. Q3 At 12.18 s after 1:30 PM, a ball's position is < 20, 8, -12> m, and the ball's velocity is < 9, -4, 6 > m/s. What is the (vector) position of the ball at 12.21 s after 1:30 PM? Assume that the ball's velocity does not change significantly in this short time interval. 1) 24.75 m 2) < 20.27, 7.88, -11.82 > m 3) < 0.27, -0.12, 0.18 > m 4) < 129.62, -40.72, 61.08 > m 5) < 129.89, -40.84, 61.26 > m Q4 A ball travels through the air. Part of its trajectory is shown in red. Which arrow best represents the direction of the average velocity of the ball as it travels from location A to location B? (1, 2, 3, or 4)? Q5 A ball travels through the air. Part of its trajectory is shown in red. Which arrow best represents the direction of the instantaneous velocity of the ball when it passes through location A? (1, 2, 3, or 4)?...
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This note was uploaded on 04/07/2008 for the course PY 205M taught by Professor Brown during the Spring '08 term at N.C. State.

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Clicker Questions - velocity - 4 The two bees have the same...

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