Well im a feshmen and taking physics and i dont know how to calculate free fall help me?!
2007-09-15 06:00:18 · 5 answers · asked by shawnmp93 1 in Science & Mathematics ➔ Physics
v = u + at
a = 9.81 ms^-2
u = whatever speed the object starts out at
t = time of freefall or to wherever you are measuring
v= final velocity
2007-09-15 06:09:47 · answer #1 · answered by 4 · 0⤊ 0⤋
Well, it depends on the problem. If in final position the object is still in the air, then, of course, you measure everything from the centre of mass. If the final position is on the ground, the you measure the distance from the ground to the bottom point of the object. If the object is very small compared to the distance and the accuracy in which you're measuring then it doesn't matter. I think in most cases it would be from the centre of mass just like the distance between cities is measured between their central post offices (or that's how it was done before)
2016-05-20 02:42:30 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Multiply the time of the fall, in seconds, by 9.8, this will give you the terminal velocity as the object strikes the ground, in meters per second.
2007-09-19 05:59:45 · answer #3 · answered by johnandeileen2000 7 · 0⤊ 0⤋
free fall without air resistence= 9.81m/s^2 but most teachers prefer you say 9.8 or 10
2007-09-15 06:07:18 · answer #4 · answered by Allen 2 · 0⤊ 0⤋
acceleration = 9.8 m/s^2
v=9.8 t +vo (vo initial velocity) m/s
distance = 4.9 t^2 +vot +do ( do initial distance from ground) m
2007-09-15 06:16:45 · answer #5 · answered by santmann2002 7 · 0⤊ 0⤋