Need only group b 1st question

49 m/s

Explanation:

This is the question from the document:

1.A bag dropped from a helicopter falls with an acceleration of 9.8m/s2. What is its velocity after 5s?

We can find the answer by using the equation a = (v-u) / t

Acceleration a = 9.81m/s2

initial velocity u = 0 m/s (the bag is only dropped, so there's no initial velocity already existing)

time t= 5s

final velocity v = unknown

9.8 = (v -0) / 5

v - 0 = 9.8x5

v = 49 m/s

this could be newton#'s law of cooling. the cooling curve is exponential

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.