Serway_CP_poll_ch03

# Serway_CP_poll_ch03 - A helicopter is traveling at 40 m/s...

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of 100 m over a level field. If a wheel falls off the helicopter, with what velocity will it hit the ground? (g = 9.8 m/s 2 and air resistance negligible) 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 40 m/s 2. 50 m/s 3. 60 m/s 4. 70 m/s

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initial speed of 10 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 4.3 s. What is the height of the cliff? (g = 9.8 m/s 2 and air resistance is negligible) 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 22 m 2. 43 m 3. 77 m 4. 91 m
initial speed of 10 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 4.3 s. How far out from the cliff's edge does the stone travel horizontally? (g = 9.8 m/s 2 and air resistance is negligible) 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 22 m 2. 43 m 3. 77 m 4. 91 m

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A baseball is thrown by the centerfielder (from shoulder level) to home plate where it is caught (on the fly at shoulder level) by the catcher. At what point does the magnitude of the vertical component of velocity have its minimum value? (air resistance is negligible) 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. just after leaving centerfielder's hand 2. just before arriving at catcher's mitt 3. at the top of the trajectory 4. magnitude of vertical component of velocity is constant
A baseball is thrown by the centerfielder (from shoulder level) to home plate where it is caught (on the fly at shoulder level) by the catcher. At what point is the ball's speed at a minimum? (air resistance is negligible) 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. just after leaving the centerfielder's hand 2. just before arriving at the catcher's mitt 3. at the top of the trajectory 4. speed is constant during entire trajectory

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home plate where it is caught (on the fly at shoulder level) by the catcher. At what point is the magnitude of the acceleration at a minimum? (air resistance is negligible) 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. just after leaving centerfielder's hand 2. just before arriving at catcher's mitt 3. at the top of the trajectory 4. acceleration is constant during entire trajectory
A baseball thrown from the outfield is released from shoulder height at an initial velocity of 29.4 m/s at an initial angle of 30° with respect to the horizontal. What is the maximum vertical displacement that the ball reaches during its trajectory?

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## This note was uploaded on 01/19/2010 for the course PHYS 200 taught by Professor Davies during the Spring '08 term at Roger Williams.

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Serway_CP_poll_ch03 - A helicopter is traveling at 40 m/s...

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