Question

A body is projected vertically upward from ground. If we neglect the effect of air, then which is the best representation of variation of speed with Time

Answer 1

2. is the correct representation. See, the velocity decreases linearly first. This is because gravity is pulling the ball down with uniform retardation. After a point, the velocity becomes 0. After,this speed increases linearly due to the positive effect of acceleration due to gravity. So, the graph looks like the second option

Answer 2

Answer: B

Explanation: Speed is directly proportional to time. V∝T