Q617: Question Bank - Physics Class 11 Motion in One Dimension Q617 Solution: A particle is thrown upwards, then correct graph will be
Students often mistakenly assume the velocity remains positive throughout the ascent or confuses the velocity-time graph with the position-time graph (which is parabolic). Remember that velocity is a vector; it decreases linearly to zero at the highest point and then becomes negative during the descent, requiring the graph to cross the time axis.
A particle is thrown upwards, then correct graph will be
Multiple Choice Options
- A graph (a): line crossing time axis
- B graph (b): hump above axis
- C graph (c): triangle above axis
- D graph (d): U-shape below axis
Step-by-Step Verified Solution
Taking initial position as origin and direction of motion (i.e., vertically up) as positive. As the particle is thrown with initial velocity, at highest point its velocity is zero and then it returns back to its reference position. This situation is best depicted in figure of option (a).\nIn figure, AB part denotes upward motion and BC part denotes downward motion.