Describe the motion of an object in free fall Given a rock which is thrown up into the air into free fall. At it maximum height its velocity is zero. What is the acceleration of the rock at this instant? (let g = the acceleration due to gravity) a. one-half of g b. g2 c. -g d. 2g e. zero
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.
Describe the motion of an object in free fall
Given a rock which is thrown up into the air into free fall. At it maximum height its velocity is zero. What is the acceleration of the rock at this instant? (let g = the acceleration due to gravity)
| a. |
one-half of g |
|
| b. |
g2 |
|
| c. |
-g |
|
| d. |
2g |
|
| e. |
zero |
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