# One-Dimensional Physics

## Quiz by Christopher Merryman

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14 questions
• Q1
A 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 car
The direction of motion of the car
The speed of the car
The average velocity of the car
120s
• Q2
In 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 zero
It can be positive, negative, or zero
It is positive
It is negative
120s
• Q3
In the case of constant acceleration, the average velocity equals the instantaneous velocity:
At the beginning of the time interval
At the end of the time interval
Three fourths of the way through the time interval
Halfway through the time interval
30s
• Q4
Displacement is which of the following types of quantities?
Dimensional
Magnitude
Vector
Scalar
30s
• Q5
Lisa throws a ball straight up; for which instance is the vertical velocity zero?
On the way back down
None of these
On the way up
At the top
30s
• Q6
The slope of a velocity vs. time curve represents:
Rate of change of acceleration
Displacement
Distance
Acceleration
30s
• Q7
An 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 these
Negative
Zero (No sign)
Positive
30s
• Q8
A 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 downward
Never
When the cannonball is traveling upward
The entire interval
30s
• Q9
30s
• Q10
30s
• Q11
30s
• Q12
30s
• Q13
30s
• Q14
30s

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