Bob (52.0kg) was curious about the amount of air resistance (friction) that would act on him as he fell through the air, so he conducted an experiment. He stepped out of a hird story window, 15.0m above the ground, and measured that it took 1.94s to hit he ground (don't worry, there was a soft mat to cushion the impact). Assuming his nitial velocity was zero as he stepped out of the window, determine the force of air friction that acted on Bob as he fell.|
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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