Two students, Amy and Bob, each throw a rock horizontally from a cliff with different initial velocities. Amy throws rock A with a greater initial speed than Bob throws rock B. (a) Sketch the velocity vs. time graphs for each rock using the system where down is the - vertical direction and away from the cliff is the + horizontal direction. You should have four sketches, as indicated by the axes below. Explain why you drew each graph as you did. Rock A (faster) Rock B (slower) d v (horizontal) v (vertical) time time v (horizontal) v (vertical) time time (b) Sketch the corresponding acceleration vs. time graphs for each rock. Explain why you drew each graph as you did.
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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