Bob and Bill are standing on a bridge 50m above a river. Bob throws a rock straight down with a speed of 20 m/s while Bill, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance. (a)How much time elapses between the first splash and the second splash? (b) Which rock has the faster speed as it hits the water?
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.
Bob and Bill are standing on a bridge 50m above a river. Bob throws a rock straight down with a speed of 20 m/s while Bill, at exactly the same instant of time, throws a rock straight up with the same speed. Ignore air resistance.
(a)How much time elapses between the first splash and the second splash?
(b) Which rock has the faster speed as it hits the water?
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