# Formula for speed at impact, and acceleration of fall just before impact!?

I need the formulas for: speed at impact, acceleration of fall just before impact. ANY HELP IS APPRECIATED! Thanks!

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- lavalamp3773Lv 71 decade agoFavorite Answer
There are five constant acceleration formulae, each one omits one of the variables. I suggest you learn them off by heart.

v = u + at

v^2 = u^2 + 2as

s = ut + 0.5at^2

s = vt - 0.5at^2

s = (u + v)t / 2

u = initial velocity (m/s)

v = final velocity (m/s)

s = distance or displacement (m)

a = acceleration (m/s^2)

t = time (s)

- 4 years ago
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Formula for speed at impact, and acceleration of fall just before impact!?

I need the formulas for: speed at impact, acceleration of fall just before impact. ANY HELP IS APPRECIATED! Thanks!

Source(s): formula speed impact acceleration fall impact: https://tr.im/Q7QKO - RosarioLv 44 years ago
speed = gt + u you dont een need the objects weight... max falling speed is the terminal velocity

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