The lifting of an object up and down, the parade of an army and the free fall of a heavy object are all examples of which motion?
Answer & explanation
Correct answer: option 1
The correct answer is option 1. Rectilinear motion.
The lifting of an object up and down, the parade of an army, and the free fall of a heavy object are all examples of rectilinear motion.
Rectilinear motion, also known as translational motion, occurs when an object moves along a straight line path. It is characterized by the object's displacement along a single dimension, typically represented by distance or position over time.
In the examples provided:
Lifting an object up and down involves vertical rectilinear motion.
The parade of an army involves horizontal rectilinear motion.
The free fall of a heavy object, under the influence of gravity, also follows rectilinear motion along a vertical path.
Rectilinear motion contrasts with other types of motion such as periodic motion (repetitive motion about a fixed point), rotational motion (motion about an axis), and oscillatory motion (back-and-forth motion around a central point).