An apple drops from the tree and falls freely. The apple is originally at rest a height 3 m above the top of the grass of a thick lawn, which is made of blades of grass of height 0.5 m. When the apple enters the grass, it slows down at a constant rate so that its speed is 0 m/s when it reaches ground level. a. Find the speed of the apple just before it enters the grass. b. Find the acceleration of the apple while it is in the grass.
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.
An apple drops from the tree and falls freely. The apple is originally at rest a height 3 m above the top of the grass of a thick lawn, which is made of blades of grass of height 0.5 m. When the apple enters the grass, it slows down at a constant rate so that its speed is 0 m/s when it reaches ground level.
a. Find the speed of the apple just before it enters the grass.
b. Find the acceleration of the apple while it is in the grass.
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