Problem 22: A rock takes 2.85 s to hit the ground when it is thrown straight up from the cliff with an initial velocity of 7.7 m/s. Part (a) Calculate the height of the cliff in m. h = ______ Part (b) How long would it take to reach the ground if it is thrown straight down with the same speed? t = ______
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.
Problem 22: A rock takes 2.85 s to hit the ground when it is thrown straight up from the cliff with an initial velocity of 7.7 m/s.
Part (a) Calculate the height of the cliff in m.
h = ______
Part (b) How long would it take to reach the ground if it is thrown straight down with the same speed?
t = ______
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