Question

An object is thrown in vertically upward direction. Which of the following velocity-time graph is appropriate for it? (Consider gravity to be acting in negative y-direction)

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

For upward motion, the equation is v = u – gt, the graph is a straight line, the y-intercept is positive and slope of the line is negative. At maximum height velocity becomes zero and object start downward motion.
For free fall, the equation is v = gt is again a straight line with positive slope and no intercept on the y-axis. In upward direction velocity is considered positive and in the downward direction velocity will be negative.