A student throws a set of keys vertically upward to her sorority sister, who is at a window 4.00 m above. The keys are caught 1.50 s later by her outstretched hand. a) With what initial velocity were the keys thrown? b) Were the keys caught on the way up or on the way down?
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.
A student throws a set of keys vertically upward to her sorority sister, who is at a window 4.00 m above. The keys are caught 1.50 s later by her outstretched hand.
a) With what initial velocity were the keys thrown?
b) Were the keys caught on the way up or on the way down?
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