You are climbing in the High Sierra when you suddenly find yourself at the edge of a fog-shrouded cliff. To find the height of this cliff, you drop a rock from the top; 8.00 s later you hear the sound of the rock hitting the ground at the foot of the cliff. (a) If you ignore air resistance, how high is the cliff if the speed of sound is 330 m>s ? (b) Suppose you had ignored the time it takes the sound to reach you. In that case, would you have overestimated or underestimated the height of the cliff? Explain.
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.
You are climbing in the High Sierra when you
suddenly find yourself at the edge of a fog-shrouded cliff. To find the
height of this cliff, you drop a rock from the top; 8.00 s later you hear
the sound of the rock hitting the ground at the foot of the cliff. (a) If
you ignore air resistance, how high is the cliff if the speed of sound
is 330 m>s ? (b) Suppose you had ignored the time it takes the sound
to reach you. In that case, would you have overestimated or underestimated
the height of the cliff? Explain.
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