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Serway_PSE_test_ch04

# Serway_PSE_test_ch04 - The vector r indicates the...

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The vector r indicates the instantaneous displacement of a projectile from the origin. At the instant when the projectile is at r, its velocity and acceleration vectors are v and a . Which statement is correct? Select the correct answer. 1 2 3 4 5 20% 20% 20% 20% 20% 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. a is always perpendicular to v x 2. a is always perpendicular to v y 3. a is always perpendicular to v 4. a is always perpendicular to r 5. v is always perpendicular to r

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at the constant rate of 5.0 m/s 2 of the total acceleration is 8.4 m/s 2 what is the speed of the particle? Select the correct answer. 1 2 3 4 5 20% 20% 20% 20% 20% 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. 7.1 m/s 2. 8.6 m/s 3. 5.0 m/s 4. 7.9 m/s 5. 6.1 m/s
A ball is thrown horizontally from the top of a building 0.11 km from and below the point of release. What is the speed of the ball just before it strikes the ground? Select the correct answer. 1 2 3 4 5 20% 20% 20% 20% 20% 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. 48 m/s 2. 46 m/s 3. 14 m/s 4. 60 m/s 5. 33 m/s

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A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 4.6s after being hit. And 3.1s after reaching this maximum height, the ball is observed to barely clear a fence that is 68.0m from where it was hit. How high
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Serway_PSE_test_ch04 - The vector r indicates the...

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