Physics
Assertion (A) : The velocity-time graph of a body in motion can be a straight line parallel to the time axis.
Reason (R) : This is because the motion of body is with uniform velocity.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Motion in One Dimension
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Answer
both A and R are true and R is the correct explanation of A
Explanation
There is a misprint in the question, velocity axis should be printed as time axis.
Assertion (A) is true because a straight line parallel to the time (x) axis implies same velocity for at all times so this happens when the velocity remains constant over time, i.e., uniform velocity.
Reason (R) is true because a horizontal velocity-time graph (parallel to the time axis) indicates uniform velocity which shows the velocity doesn’t change with time and hence, Reason justifies the assertion.
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