A. Upwelling is the rising of cold water from deep layers to replace warm surface water.
Explanation:
Given:
v₀ = 0 m/s
v = 49 m/s
a = 9.8 m/s²
Find: t
v = at + v₀
49 m/s = (9.8 m/s²) t + 0 m/s
t = 5 s
Answer:
Graph D
Explanation:
The speed of sound in steel or any solid is faster than the speed of sound through air. This means the steel bar on the graph graph should be the larger of the two.