Unit Test Answers
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speedvelocitypositiondirection
A
speedB
velocityC
positionD
direction3
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Hannah made a chart to describe speed and velocity.
A
Switch the chart headings “Speed” and “Velocity.”B
Describe the calculation for speed as “dividing distance by time.”C
In the “Speed” column, change “has magnitude” to “is a displacement.”D
Change the last row of the “Velocity” column to “does not depend on a reference frame.”4
The chart shows data for an object moving at a constant acceleration.
A
X: 0Y: 0Z: 1B
X: 2Y: 4Z: 6C
X: 3Y: 3Z: 3D
X: 1Y: 5Z: 8
6
Which graph shows an object with constant acceleration?
A
Option
B
A graph titled Velocity versus Time shows time in seconds on the x axis, numbered 0 to 10, and velocity in meters per second on the y axis, numbered 0 to 50. A line starts at the origin and goes to (4, 40), then a line from (4, 40) to (9, 40) and a line from (9, 40) to (10, 0).
C
A graph titled Velocity versus Time shows time in seconds on the x axis, numbered 0 to 5, and velocity in meters per second on the y axis, numbered 0 to 10. A line starts at (0, 10) and ends at (5, 0).
D
A graph titled Velocity versus Time shows time in seconds on the x axis, numbered 0 to 5, velocity in meters per second on the y axis, numbered 0 to 35. A curved line starts at the origin and arcs up to (4.3, 35).
7
The diagram shows a position-time graph.
A
–2 mB
–1 mC
3 mD
4 m8
The motion map shows an object’s position and velocity at given times.How can the map be changed so it shows constant acceleration after the object changes direction?
A
by adding vectors that are all the same length and placing them above the current top row of vectorsB
by adding vectors that gradually increase in length and placing them above the current top row of vectorsC
by adding vectors that are all the same length and placing them below the current bottom row of vectorsD
by adding vectors that gradually increase in length and placing them below the current bottom row of vectorsDid you find these answers helpful?
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