Abird flying horizontally accidently at 4.25m/s accidentally drops a rock it was carrying. a short time later, the rocks velocity is 13.0m/s at -70.9. how much time has passed? (unit s)

1.25 s

Explanation:

Given:

v₀ᵧ = 0 m/s

vᵧ = 13.0 sin(-70.9) m/s

aᵧ = -9.8 m/s²

Find: t

In the y direction:

v = at + v₀

13.0 sin(-70.9) = (-9.8) t + 0

t = 1.25

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

the answer is a)

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