Question

A boy throws a stone vertically upward from a bridge, which is 20 m above the surface of
water. The stone strikes the water surface 8 s after its release. Calculate the speed by
which the stone was thrown up?
a) V. = 15.42 m/s
b) v. = 19.57 m/s
c) v. = 10.25 m/s
d) v. = 22.52 m/s​

Answer 1

Answer:

I think D is the correct answer