Describing Motion
Describing Motion: Overview
This topic covers concepts such as Reference Frame, Reference Point, Motion along a Straight Line, Displacement, Motion, Rest and Motion, Distance, SI Unit of Distance, Uniform Motion, Non-uniform Motion, and Position.
Important Questions on Describing Motion
Coordinate system is a type of frame of reference.
To measure position, displacement, acceleration of an object we do not need frame of reference.
Which of the following can be calculated if a frame of reference is given?
A frame of reference is a set of coordinates that can be used to determine positions and velocities of objects in that frame.
Which of the following are stationary relative to earth?
Suppose in a garden children are playing around a tree. To analyse the motion of the children which one of the following will be suitable for point of reference?
Which of the following can be stationary point of reference?
Why reference point is important to describe an object in motion?
Can you give some examples, where the displacement of the object is zero?
Two trains each of having a speed of are headed at each other in opposite direction on the same track. A bird flies off one train to another with a constant speed of when they are apart till before they crash. Find the distance covered by the bird and how many trips the bird can make from one train to the other before they crash.
As shown in figure given below, a point traverses the curved path. Draw the displacement vector from given points A to B.
Give an example of motion where there is a change only in speed but no change in direction of motion.
The speedometer of the car indicates a constant reading. Is the car in uniform motion? Explain.
When do the distance and magnitude of displacement become equal?
What is the displacement of the body if it returns to the same point from where it started? Give one example from daily life.
The motion of needle of a watch is an example of _____ motion.
Can displacement be negative? Compare displacement with simple linear motion.
Uniform circular motion is an accelerated motion.
An object is said to be in motion if it changes its position relative to a _____.
(Choose from: Temperature/reference point)
