Answer:
39.6 m/s
Explanation:
Taking down to be positive:
Given:
v₀ = 0 m/s
a = 9.8 m/s²
Δy = 80 m
Find: v
v² = v₀² + 2aΔy
v² = (0 m/s)² + 2 (9.8 m/s²) (80 m)
v = 39.6 m/s
It is C. A description goes into the details about something, and an explanation is a statement that clarifies something, generally a question.
Its a proces of combustion "burning"humans produce carbon dioxide,rocks<plants whatever is burning energy
