**Answer:**

15 m/s

**Explanation:**

Initial momentum = final momentum

(25 kg) (15 m/s) + (25 kg) (0 m/s) = (25 kg) (0 m/s) + (25 kg) v

v = 15 m/s

B) the distance from 2 credits of the wave

Distance= speed (multiplied by) time

To determine, the final velocity we use one kinematic equation. It would be 2ax = vf^2 - v0^2. The initial velocity would be zero since it starts from rest. Therefore, the equation would be:

vf = √(2ax) where a is the acceleration ( a = g ) and x is the height

vf = √(2)(9.8)(25)

**vf = - 22.14 m/s**

**Answer: **The five major fields of environmental science are social sciences, geosciences, environmental chemistry, ecology, and atmospheric sciences.

**Explanation:**