A hockey player is standing on his skates on a frozen pondwhen an opposing player, moving with a uniform speed of 12m/s, skates by with the puck. After 3.0 s, the first player makesup his mind to chase his opponent. If he accelerates uniformlyat 4.0 m/s2, (a) how long does it take him to catch his opponent,and (b) how far has he traveled in that time? (Assumethe player with the puck remains in motion at constant speed.)
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.
A hockey player is standing on his skates on a frozen pond
when an opposing player, moving with a uniform speed of 12
m/s, skates by with the puck. After 3.0 s, the first player makes
up his mind to chase his opponent. If he accelerates uniformly
at 4.0 m/s2, (a) how long does it take him to catch his opponent,
and (b) how far has he traveled in that time? (Assume
the player with the puck remains in motion at constant speed.)
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