On July 13, 1977, while on atest drive at Britain’s Silverstone racetrack, the throttle on DavidPurley’s car stuck wide open. The resulting crash subjected Purleyto the greatest “g-force” ever survived by a human—he deceleratedfrom 173 km>h to zero in a distance of only about 0.66 m. Calculate the magnitude of the acceleration experienced by Purley(assuming it to be constant), and express your answer in units ofthe acceleration of gravity, g = 9.81 m>s2.
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.
On July 13, 1977, while on a
test drive at Britain’s Silverstone racetrack, the throttle on David
Purley’s car stuck wide open. The resulting crash subjected Purley
to the greatest “g-force” ever survived by a human—he decelerated
from 173 km>h to zero in a distance of only about 0.66 m. Calculate the magnitude of the acceleration experienced by Purley
(assuming it to be constant), and express your answer in units of
the acceleration of gravity, g = 9.81 m>s2
.
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