Which of the following statements are TRUE? Choose all that apply. (HINT: The statements that are false should contradict themselves or a definition.) 1. An object can simultaneously be moving and have zero velocity. 2. An object can simultaneously have zero velocity and have constant position. 3. An object can simultaneously have positive velocity and have constant acceleration. 4. An object can simultaneously have positive displacement and be traveling a positive distance. 5. An object can simultaneously be traveling a negative distance and have constant positive acceleration. 6. An object can simultaneously have positive acceleration and have positive velocity.
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.
Which of the following statements are TRUE? Choose all that apply. (HINT: The statements that are false should contradict themselves or a definition.)
1. An object can simultaneously be moving and have zero velocity.
2. An object can simultaneously have zero velocity and have constant position.
3. An object can simultaneously have positive velocity and have constant acceleration.
4. An object can simultaneously have positive displacement and be traveling a positive distance.
5. An object can simultaneously be traveling a negative distance and have constant positive acceleration.
6. An object can simultaneously have positive acceleration and have positive velocity.
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