Question

A ball is thrown vertically upward with a velocity T'. Show that velocity with which it falls to the earth is also J ? ​

Answer 1

Answer:

For vertically upward motion: g is negative as it opposes the motion.

v = u – gt

0 = u – gt

t = u/g …..(1)

For vertically downward motion: g is positive as it is in the direction of motion.

v = u + gt

v = 0 + gt

t = v/g …..(2)

From equation 1 and 2

v = u

Explanation:

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