Podcast
Questions and Answers
Distance is always a positive number because it is a scalar.
Distance is always a positive number because it is a scalar.
True (A)
Which of these describes the location of an object with respect to a starting point?
Which of these describes the location of an object with respect to a starting point?
- Distance
- Position (correct)
- Velocity
- Displacement
A car that is traveling at 55 km/h is moving faster than another car traveling at -55 km/h.
A car that is traveling at 55 km/h is moving faster than another car traveling at -55 km/h.
False (B)
What does a zero slope on a velocity-time graph indicate about an object's motion?
What does a zero slope on a velocity-time graph indicate about an object's motion?
To find distance when given time and velocity you ______ the two
To find distance when given time and velocity you ______ the two
What represents the velocity at the beginning of a time interval?
What represents the velocity at the beginning of a time interval?
What is equal to the slope of a displacement-time graph?
What is equal to the slope of a displacement-time graph?
Match the following terms with their definition:
Match the following terms with their definition:
What quantity indicates how far an object has traveled without specifying direction?
What quantity indicates how far an object has traveled without specifying direction?
A dog walks east at 5.9 m/s. How long will it take to travel 210.0 m?
A dog walks east at 5.9 m/s. How long will it take to travel 210.0 m?
What does the slope of a position-time graph represent?
What does the slope of a position-time graph represent?
Which of these is a vector quantity?
Which of these is a vector quantity?
If the final distance of a trip is +19.8 m, and the change in distance is +7.3 m, where was the starting point?
If the final distance of a trip is +19.8 m, and the change in distance is +7.3 m, where was the starting point?
The rate of change of velocity of an object is indicated by its ____.
The rate of change of velocity of an object is indicated by its ____.
An object with a positive initial velocity and negative acceleration will always increase in velocity.
An object with a positive initial velocity and negative acceleration will always increase in velocity.
What is the position of the object at 5.0 seconds according to the provided Position-Time graph?
What is the position of the object at 5.0 seconds according to the provided Position-Time graph?
What is the average velocity of the object over the first 11.0 seconds, according to the provided Position-Time graph?
What is the average velocity of the object over the first 11.0 seconds, according to the provided Position-Time graph?
According to the provided Position-Time graph, during what interval(s) is the object moving forward?
According to the provided Position-Time graph, during what interval(s) is the object moving forward?
According to the provided Position-Time graph, the object is moving backward during interval C.
According to the provided Position-Time graph, the object is moving backward during interval C.
What is the displacement of the object from 6.0 s to 14.0 s according to the provided Position-Time graph?
What is the displacement of the object from 6.0 s to 14.0 s according to the provided Position-Time graph?
A cheetah can run with a maximum speed of 110 km/hr. If his sprint lasts 5.0 s, he will travel approximately ______ meters.
A cheetah can run with a maximum speed of 110 km/hr. If his sprint lasts 5.0 s, he will travel approximately ______ meters.
Match the description with the associated term:
Match the description with the associated term:
You leave your place at 3:00 pm and drive for 100 km. When you arrive at your destination it is 5:00 pm. What was your average velocity?
You leave your place at 3:00 pm and drive for 100 km. When you arrive at your destination it is 5:00 pm. What was your average velocity?
Flashcards
Distance
Distance
The total length of the path traveled by an object, regardless of direction.
Displacement
Displacement
The change in an object's position from its starting point to its ending point.
Velocity
Velocity
The rate at which an object changes its position.
Acceleration
Acceleration
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Speed
Speed
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Vector
Vector
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Initial velocity
Initial velocity
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Final velocity
Final velocity
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Scalar
Scalar
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Distance traveled
Distance traveled
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Study Notes
Physics Test - Part A
- Rate of change: Defined as the change in state divided by the change in time
- Distance vs. Position: Distance is a scalar (magnitude only) measuring total travel, while position is a vector (magnitude and direction) indicating location relative to a reference point
- Speed vs. Velocity: Speed is the rate of distance covered (scalar), while velocity is the rate of change of position (vector)
- Velocity calculations: Velocity equals change in distance over time
- Position-time graphs: Slope of the graph represents velocity
- Vector quantities: Examples include velocity and displacement, these have both magnitude and direction
Definitions
- Speed: The rate at which an object covers distance, always positive, no direction
- Velocity: A vector quantity that involves displacement over time, and can be negative
True/False Questions
- Moving objects: Positive slopes on velocity-time graphs indicate moving objects
- Distance vs. direction: Distance is always positive, while vector quantities like displacement can be negative.
- Circular paths: When an object completes a circular path, its average velocity is zero
- Relative motion: A car traveling at 55km/h is moving faster than a car traveling at -55km/h
- Horizontal lines: A horizontal line on a position-time graph indicates the object is stationary
- Accelerating objects: A zero slope on a velocity-time graph means no change in velocity (no acceleration) - object may be travelling at constant velocity
- Velocity vs. distance: Velocity uses displacement, while distance refers to total travel
- Calculating distance: Distance is not determined by dividing time and velocity in this context
Diagrams (Part B)
- Position-Time Graph Analysis: Analyze graphs to determine position, velocity (from slope), intervals of motion (forward, backward, rest), and displacement over specific time intervals
- Problem-solving with graphs: Questions require a practical application of principles learned
Other Problems (Part C & D)
- Average Velocity Calculation: Example calculation of average velocity given distance and time
- Distance calculation: Calculate the distance traveled given velocity and time
- Displacement Calculation for a closed path: Determine displacement for a closed path situation
- Speed and Velocity Calculations/Definitions: Includes calculation given time and velocity, displacement, and the difference between speed and velocity.
- Time Calculation: Calculation for time given velocity and distance.
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