An object A is thrown in the upward direction from ground. Which of the following displacement-time graph describes the motion of object A correctly? (Take upward direction as positive)

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Solution

The correct option is B
The object A is under constant acceleration of Earth's gravitational force ( $g = 9.8 m s^{- 2}$ ) when it is thrown upwards. We know that the displacement-time graph of a body under constant acceleration is a curve. Also, the displacement of the object A becomes zero when it falls back to the ground. Hence, the displacement-time graph should look like this:

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