Question
Physics Question on Motion in a straight line
The position-time graph of a body moving uniformly in a straight line is parallel to position axis. The position-time graph in a non-uniform motion gives constant velocity at all instants of time.
A
If both assertion and reason are true and reason is the correct explanation of assertion
B
If both assertion and reason are true but reason is not the correct explanation of assertion
C
If assertion is true but reason is false
D
If both assertion and reason are false
Answer
If both assertion and reason are false
Explanation
Solution
If the position-time graph of a body moving uniformly in a straight line is parallel to position axis, it means that the position of body is changing at constant time, which is absurd and shows that the velocity of the body is infinite.