please who know mathematic or physic help me its important right result
2007-03-17 20:32:52 · 2 answers · asked by feri 1 in Science & Mathematics ➔ Mathematics
You're question is extremely vague.. Next time, type down the actual problem, so we can get an idea of what you're wanting to solve.
I'm assuming you have a 55 kg man, who's jumping from an 800m height. How long will it take him to splat on the concrete below????
Well...
Since we know his acceleration is 9.8 m/s² downward, and we're assuming (since you failed to mention it) he's falling down and not jumping off... we have....
y = ½ g t² + vi t + h
g = -9.8 m/s²
vi = 0 m/s
h = 800 m
y = 0 m
0 = ½ (-9.8)t² + 800
t = 12.8 s
2007-03-17 20:45:50 · answer #1 · answered by Boozer 4 · 0⤊ 0⤋
Do the math acceleration =10m per second squared.
2007-03-18 03:37:17 · answer #2 · answered by The Stainless Steel Rat 5 · 0⤊ 0⤋