1.

A body projected vertically upwards with a velocity \[u\] returns to the starting point in 4 seconds. If \[g=10\]m/sec2, the value of \[u\] is       [KCET 1999]

A.             5 m/sec           
B.             10 m/sec
C.             15 m/sec
D.                      20 m/sec
Answer» E.


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