Phys211Exam1Sample

# Phys211Exam1Sample - Physics 211 Exam 1 Sample Problems 1...

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Physics 211 Exam 1 Sample Problems

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1)
The figure below shows the position of a particle (moving along a straight line) as a function of time. Which of the following statements is true? A)

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The acceleration of the object is zero. B)
The acceleration of the object is opposite the direction of the velocity. C)

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The acceleration of the object is in the same direction as the velocity. 2)
Suppose in the above motion diagram (in problem 1) that the particle has a turning point at t=6 s, after which it starts heading back to the origin. Which of the following quantities equal zero at the turning point? A)

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velocity B)
acceleration C)

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Velocity and acceleration D)
None of these are zero 3)

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A car accelerate s from 10.0 m/s to 30 m/s over a distance of 75 m. What is the acceleration of the car as it is speeding up? A)
10.7 m/s 2 B)

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8.0 m/s 2 C)
0.13 m/s 2 D)

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5.3 m/s 2
4)

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velocity of an object is given by v(t) = 3t – 4, where t is in seconds, and the velocity is in m/s. The particles’ initial position is x 0 = 1 m at t = 0 s. What is the acceleration of the object at t = 4s? A)
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Phys211Exam1Sample - Physics 211 Exam 1 Sample Problems 1...

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