# One-Dimensional Physics

## Quiz by Christopher Merryman

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14 questions

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- Q1A strobe photograph shows equally spaced images of a car moving along a straight road. If the time intervals between images is constant, which of the following CANNOT be positive?The acceleration of the carThe direction of motion of the carThe speed of the carThe average velocity of the car120s
- Q2In one-dimensional motion, the average speed of an object that moves from one place to another and then back to its original place has which of the following properties?It is zeroIt can be positive, negative, or zeroIt is positiveIt is negative120s
- Q3In the case of constant acceleration, the average velocity equals the instantaneous velocity:At the beginning of the time intervalAt the end of the time intervalThree fourths of the way through the time intervalHalfway through the time interval30s
- Q4Displacement is which of the following types of quantities?DimensionalMagnitudeVectorScalar30s
- Q5Lisa throws a ball straight up; for which instance is the vertical velocity zero?On the way back downNone of theseOn the way upAt the top30s
- Q6The slope of a velocity vs. time curve represents:Rate of change of accelerationDisplacementDistanceAcceleration30s
- Q7An object moves 40 meters East in 30 seconds then returns to the starting point in an additional 50 seconds. If West is chosen as the positive direction, what is the sign associated with the average velocity of the object?Any of theseNegativeZero (No sign)Positive30s
- Q8A cannonball is shot straight vertically upward with gravity causing it fall back to its original position. During which interval of its flight is the cannonball's acceleration negative? (Assume up is the positive direction)When the cannonball is traveling downwardNeverWhen the cannonball is traveling upwardThe entire interval30s
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