1.

A man throws a ball vertically upward and it rises through 20 m and returns to his hands. What was the initial velocity \[(u)\] of the ball and for how much time \[(T)\] it remained in the air \[[g=10m/{{s}^{2}}]\]                                 [MP PET 2001]

A.             u = 10 m/s, T = 2s    
B.             u = 10 m/s, T = 4s
C.             u = 20 m/s, T = 2s
D.                      u = 20 m/s, T = 4s
Answer» E.


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