A stone is dropped from the upper observation deck of a tower, 900 m above the ground. (Assume g = 9.8 m/s2.) (a) Find the distance (in meters) of the stone above ground at time t. s(t) = 900 – 4.9? (b) How long does it take the stone to reach the ground? (Round your answer to two decimal places.) 13.55 (c) With what velocity does it strike the ground? (Round your answer to one decimal place.) -132.79 m/s (d) If the stone is thrown downward with a velocity of 9 m/s, how long does it take to reach the ground? (Round your answer to two decimal places.)
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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