Question

1. A stone is dropped from the edge of a roof.
(a) How long does it take to fall 45.9m?
(b) How fast does it move at the end of the fall?
(c) How fast does it move at the end of 7.9 m?​

Answer 1

Answer:

a-3 root(54)

b-same answer as a

c-root(158)

Explanation:

there is a formula

v^2=u^2+2as

a is acceleration

s is distance

u is intial speed

v is final spees