A toy car is rolled across a table. Students time how long it takes the car to travel specific distances. They then plot their data as a position time graph. Position (m) Time (s) What can the students determine about the motion of the car based on the position-time graph? A The car was accelerating forward. B The car was moving at a constant velocity forward. The car was moving at a constant velocity backwards.
Displacement, Velocity and Acceleration
In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.
Linear Displacement
The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.
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A toy car is rolled across a table. Students time how long it takes the car to travel specific distances. They
then plot their data as a position time graph.
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Time (s)
Position (m)
What can the students determine about the motion of the car based on the position-time graph?
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The car was accelerating forward.
The car was moving at a constant velocity forward.
The
car was moving at a constant velocity backwards.
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What can the students determine about the motion of the car based on the position-time graph?
Position (m)
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A The car was accelerating forward.
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The car was moving at a constant velocity forward.
The car was moving at a constant velocity backwards.
The car was not moving.
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