Physics for Scientists And Engineers Foundations And Connections 1st Edition by Debora M. Katz – Test Bank
Chapter 4 – Two- and Three-Dimensional Motion.
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1. At t = 0, a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of m/s2. At the instant the x coordinate of the particle is 15 m, what is the speed of the particle? a. 10 m/s b. 16 m/s c. 12 m/s d. 14 m/s e. 26 m/s ANSWER: a POINTS: 2 DIFFICULTY: Average |
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2. A particle starts from the origin at t = 0 with a velocity of 6.0 m/s and moves in the xy plane with a constant acceleration of m/s2. At the instant the particle achieves its maximum positive x coordinate, how far is it from the origin? a. 36 m b. 20 m c. 45 m d. 27 m e. 37 m ANSWER: b POINTS: 2 DIFFICULTY: Average |
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3. A particle leaves the origin with a velocity of 7.2 m/s in the positive y direction and moves in the xy plane with a constant acceleration of m/s2. At the instant the particle moves back across the x axis (y = 0), what is the value of its x coordinate? a. 65 m b. 91 m c. 54 m d. 78 m e. 86 m ANSWER: d POINTS: 2 DIFFICULTY: Average |
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4. At t = 0, a particle leaves the origin with a velocity of 5.0 m/s in the positive y direction. Its acceleration is given by m/s2. At the instant the particle reaches its maximum y coordinate how far is the particle from the origin? a. 11 m b. 16 m c. 22 m d. 29 m e. 19 m ANSWER: a POINTS: 2 DIFFICULTY: Average |
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5. A particle moves in the xy plane with a constant acceleration given by m/s2. At t = 0, its position and velocity are m and m/s, respectively. What is the distance from the origin to the particle at t = 2.0 s? a. 6.4 m b. 10 m c. 8.9 m d. 2.0 m e. 6.2 m ANSWER: b POINTS: 3 DIFFICULTY: Challenging |
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6. A particle starts from the origin at t = 0 with a velocity of m/s and moves in the xy plane with a constant acceleration of m/s2. What is the speed of the particle at t = 2.0 s? a. 52 m/s b. 39 m/s c. 46 m/s d. 33 m/s e. 43 m/s ANSWER: d POINTS: 2 DIFFICULTY: Average |
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7. At t = 0, a particle leaves the origin with a velocity of 12 m/s in the positive x direction and moves in the xy plane with a constant acceleration of m/s2. At the instant the y coordinate of the particle is 18 m, what is the x coordinate of the particle? a. 30 m b. 21 m c. 27 m d. 24 m e. 45 m ANSWER: c POINTS: 2 DIFFICULTY: Average |
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8. The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball? a. 16 s b. 21 s c. 24 s d. 14 s e. 19 s ANSWER: a POINTS: 3 DIFFICULTY: Challenging |
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