An object moves along the ry-plane. At some instant, its velocity and acceleration are J = – (3 m/s) ĵ , ā = (0.5 m/s²) î – (0.2 m/s²) ĵ. At this instant, the object is A. speeding up and following a curved path. B. speeding up and moving in a straight line. C. slowing down and following a curved path. D. slowing down and moving in a straight line. E. none of these.
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.
An object moves along the xy-plane. At some instant, its velocity and acceleration are
~v = (3 m/s) ˆj , ~a =
0.5 m/s2
ˆi
0.2 m/s2 ˆj. At this instant, the object is
A. speeding up and following a curved path.
B. speeding up and moving in a straight line.
C. slowing down and following a curved path.
D. slowing down and moving in a straight line.
E. none of these.
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