E1t3 Retake Preap 2016

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  • 1/5 Questions

    What is the speed of an object at rest?

    • A. 0.0 m/s
    • B. 1.0 m/s
    • C. 9.8 m/s
    • D. 9.81 m/s
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About This Quiz

This E1T3 Retake PreAP 2016 quiz assesses fundamental kinematics concepts in Physics. It covers topics such as object speed at rest, negative displacement, and motion analysis. Designed for PreAP students, it helps in reinforcing comprehension of motion dynamics.

E1t3 Retake Preap 2016 - Quiz

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  • 2. 

    Which of the following situations represents a negative displacement? (Assume positive position is measured vertically upward along a y-axis.)

    • a. A cat stands on a tree limb.

    • b. A cat jumps from the ground onto a tree limb.

    • c. A cat jumps from a lower tree limb to a higher one.

    • d. A cat jumps from a tree limb to the ground.

    Correct Answer
    A. d. A cat jumps from a tree limb to the ground.
    Explanation
    In this scenario, the cat is moving downwards from a higher position (tree limb) to a lower position (ground). Since the positive position is measured vertically upward along the y-axis, any movement in the opposite direction (downward) represents a negative displacement. Therefore, option d is the correct answer as it represents a negative displacement.

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  • 3. 

    A toy car rolls from +3 m to +5 m. Which of the following statements is true?     

    • A. xf = +3 m

    • B. xi = +3 m

    • C. delta x = +3 m

    • D. vavg = 3 m/s

    Correct Answer
    A. B. xi = +3 m
    Explanation
    The correct answer is b. xi = +3 m. This statement is true because xi represents the initial position of the toy car, and in this case, it starts at +3 m.

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  • 4. 

    What is the correct description of any change of position farther to the left of zero?

    • A. positive displacement

    • B. negative distance

    • C. positive position

    • D. negative displacement

    Correct Answer
    A. D. negative displacement
    Explanation
    A change of position farther to the left of zero indicates that the object has moved in the negative direction, or to the left. Displacement refers to the change in position, and since the object has moved to the left, the displacement is negative. Therefore, the correct answer is d. negative displacement.

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  • 5. 

    Rank in increasing order the distances traveled by objects having the following pairs of average velocity and time of motion.I. vavg = -4.0 m/s, t = 2.0 sII. vavg = +3.0 m/s, t = 2.0 sIII. vavg = -3.0 m/s, t = 3.0 s

    • A. III, I, II

    • B. II, III, I

    • C. II, I, III

    • D. III, II, I

    Correct Answer
    A. C. II, I, III
    Explanation
    The distance traveled by an object can be calculated by multiplying the average velocity by the time of motion. In this case, for option II, the average velocity is +3.0 m/s and the time of motion is 2.0 s, resulting in a positive distance traveled. For option I, the average velocity is -4.0 m/s and the time of motion is 2.0 s, resulting in a negative distance traveled. For option III, the average velocity is -3.0 m/s and the time of motion is 3.0 s, resulting in a negative distance traveled. Therefore, the correct order of distances traveled in increasing order is II, I, III.

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  • Current Version
  • Jul 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 25, 2015
    Quiz Created by
    Sfduke
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