Question : A body projected vertically upwards with velocity π’ returns to the starting point in 4 seconds. If π =10 π/ sec2 , the value of π’ is
(A) 5 π/π ππ
(B) 10 π/π ππ
(C) 15 π/π ππ
(D) 20 π/π πc
Answer : option (D)
Solution :
