Question

What type of motion is the motion of a car on a straight road?
A. Curvilinear motion
B. Rectilinear motion
C. Periodic motion
D. Rotational motion

Answer 1

Hint: When a body is following a straight path, then the motion of the body is considered to be rectilinear. In this rectilinear motion, each of the included particles of the body will be having the similar path. This will help you in answering this question.

Complete step by step answer:
if we need only one coordinate in the direction of the time axis in order to define the motion of a body, then it is said to be in linear motion or in rectilinear motion. A few examples of rectilinear motion includes the parade of soldiers, a train which is in motion along a straight line, and so on. Basically there are three kinds of rectilinear motion. One is uniform rectilinear motion. If an object is traveling at a fixed speed having a zero acceleration, then it is called as uniform rectilinear motion. When the body is traversing with a fixed value of acceleration, then it is referred to as uniformly accelerated rectilinear motion. The rectilinear movement with non-uniform acceleration is defined when the body is traveling at an irregular velocity and also acceleration, then it is called as a rectilinear movement with a non-uniform acceleration. In this rectilinear motion, each of the included particles of the body will be having the similar path. As the car moving is in a straight line, then the motion will be rectilinear itself.

So, the correct answer is “Option B”.

Note: The usage of elevators in the public areas will be an example for the rectilinear motion. The gravitational forces experienced on the bodies will result in free fall. This is also an example for the rectilinear motion. The Kids sliding down from a slide and the motion of planes in the sky can also be taken as examples for the rectilinear motion.