Question

61 A weather balloon is released and rises vertically such
that its distance (1) above the ground during the first to
sec of fight is given by s(i) = 6 + 2r +r?, where s(0)
is in feet and is in seconds. Find the velocity of the
balloon at
(a) + = 1,1 = 4, and I = 8
(b) the instant the balloon is 50 ft above the ground​

Answer 1

Answer:

1. the answer is b option...........................................