Visualizing Kinematics
About the Lecture
The lecture Visualizing Kinematics by Jared Rovny, PhD is from the course Translational Motion.
Included Quiz Questions
Which statement is TRUE if the acceleration in an acceleration-time graph is positive and constant?
- The velocity-time graph will be a straight line with a positive slope, and the position-time graph will not be a straight line.
- Neither the position nor the velocity graph will be straight lines.
- The velocity graph will slope upward, while the position graph will slope downwards.
- Velocity will be zero, but the position will be non-zero.
- The position graph will cross through the zero axes at least twice.
The position-time graph of an object is a straight and positively sloped line. What can you say about the velocity and acceleration of this object?
- The velocity is positive and constant, while the acceleration is zero.
- The velocity and acceleration are positive and constant.
- The velocity and acceleration are positive and changing.
- The velocity is positive but changing, while the acceleration is positive and constant.
- The velocity is positive and changing, while the acceleration is zero.
When can you use the equation for the average velocity v = ∆x/∆t, to find the velocity for the entire velocity versus time graph?
- This can only be used when the position graph is a straight line.
- The formula can never be used for the entire velocity graph.
- This can always be used for the entire graph.
- This can only be used when the position graph is not a straight line.
- This can only be used if the position is not changing.
Assume the position-time graph is shifted up or down without changing shape. What happens to the velocity and acceleration graphs?
- The velocity and acceleration graphs will be unchanged.
- It's impossible to answer without knowing the magnitude of the shift.
- Only the velocity graph will change.
- Only the acceleration graph will change.
- The velocity graph will increase while the acceleration graph slope changes.
What does the area under a velocity versus time graph represent in a particular time interval?
- The displacement during that time
- The average velocity during that time
- The average acceleration during that time
- The current position of the object after that time interval
- The final velocity of the object
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Author of lecture Visualizing Kinematics
Jared Rovny, PhD
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This lecture has taught me more maths than I learned in one entire year at school. Thank you!
