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.
The minimum speed he'd need to run off the edge of the cliff to make it safely to the far side of the river?
![Watch Video Solution Problems 3.69 and 3.75
63. In 1780, in what is now
1563
referred to as "Brady's Leap,"
Captain Sam Brady of the U.S.
Continental Army escaped cer-
tain death from his enemies
by running horizontally off the
edge of the cliff above Ohio's
Cuyahoga River, which is con-
FIGURE P3.63
fined at that spot to a gorge. He landed safely on the far side of
the river. It was reported that he leapt 22 ft across while falling
20 ft. Tall tale, or possible?
a. What is the minimum speed with which he'd need to run off the
edge of the cliff to make it safely to the far side of the river?
b. The world-record time for the 100 m dash is approximately
10 s. Given this, is it reasonable to expect Brady to be able to
run fast enough to achieve Brady's leap?
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