For an object moving in a horizontal straight line: If the acceleration a(t) is less than zero and velocity v(t) is less than zero at time t, then we can say that the object is____ A. slowing down B. speeding up C. changing direction D. moving with uniform speed
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.
For an object moving in a horizontal straight line: If the acceleration a(t) is less than zero and velocity v(t) is less than zero at time t, then we can say that the object is____
| A. |
slowing down |
|
| B. |
speeding up |
|
| C. |
changing direction |
|
| D. |
moving with uniform speed |
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