Book Problem 37 A stone is thrown straight down from the edge of a roof, 1150 ft above the ground, at a speed of 7 ft/sec. A. Given that the acceleration due to gravity is -32 ft/sec, how high is the stone 3 seconds later? 985 ft. B. At what time does the stone hit the ground? 8.25 sec. C. What is the velocity of the stone when it hits the ground? -271 ft/sec.
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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