A ball is dropped from the top of a tall building. At the same instant, a second ball is thrown upward from the ground level. When the two balls pass one another, one on the way up, the other on the way down, compare the magnitudes of their acceleration:(a) The acceleration of the dropped ball is greater.(b) The acceleration of the ball thrown upward is greater.(c) The acceleration of both balls is the same.(d) The acceleration changes during the motion, so youcannot predict the exact value when the two balls pass each other.(e) The accelerations are in opposite directions.
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 ball is dropped from the top of a tall building. At the same instant, a second ball is thrown upward from the ground level. When the two balls pass one another, one on the way up, the other on the way down, compare the magnitudes of their acceleration:
(a) The acceleration of the dropped ball is greater.
(b) The acceleration of the ball thrown upward is greater.
(c) The acceleration of both balls is the same.
(d) The acceleration changes during the motion, so you
cannot predict the exact value when the two balls pass each other.
(e) The accelerations are in opposite directions.
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