A kid in a wagon rolls from rest down a hill and reaches the bottom at 12 m/s. On the next run she gets a push and starts down at 5.0 m/s. At what speed does she now arrive at the bottom? (Hint: If you think it’s 17 m/s, think again!) 7 m/s 12 m/s 13 m/s 17 m/s
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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A kid in a wagon rolls from rest down a hill and reaches the bottom at 12 m/s. On the next run she gets a push and starts down at 5.0 m/s. At what speed does she now arrive at the bottom? (Hint: If you think it’s 17 m/s, think again!)7 m/s12 m/s13 m/s17 m/s
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