5. In a 300-m race, runner A starts from rests and accelerates at 1.6m/s? for the first 30 m and then runs at a constant speed. Runner B starts from rests and accelerates at 2.0m/s? for the first 30m and then runs at a constant speed. Runner A begins running as soon as the race begins but B firsts takes a nap to rest up. What is the longest nap that B can take and still not to lose the race?
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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