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What will be the velocity v/s time graph of a ball falling from a height before hitting the ground look like?(a) A straight line with positive slope(b) A straight line with negative slope(c) A straight line with zero slope(d) A parabolaThis question was posed to me during an interview for a job.Enquiry is from Straight Line Motion in chapter Motion in a Straight Line of Physics – Class 11

Answer»

Right OPTION is (a) A straight line with positive SLOPE

The best I can explain: As the ball falls down, its velocity increases. This is because of the acceleration due to GRAVITY. Hence the graph looks like a straight line with positive slope. The first equation of MOTION VERIFIES this.



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