A football player, starting from rest at the line of scrimmage, accelerates along a straight line for a time of 3.49 s. Then, during a negligible amount of time, he changes the magnitude of his acceleration to a value of 1.37 m/s2. With this acceleration, he continues in the same direction for another 1.35 s, until he reaches a speed of 7.64 m/s. What is the value of his acceleration (assumed to be constant) during the initial 3.49 -s period? Number i Units
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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