What velocity does the ball hit the grond?
gravity=-32ft/sec.sq
2007-12-30 17:19:22 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
v² = u² + 2as
u = 64ft/s
a = +32ft/s² (positive acceleration as we are considering velocity towards the ground as positive)
s = 480ft
v² = 64² + 2*32*480
= 4096 + 30720
= 34816ft²/s²
v = √34816
≈ 186.6 ft/s (ignoring air resistance)
2007-12-30 17:28:50 · answer #1 · answered by gudspeling 7 · 1⤊ 0⤋
v ² = u ² + 2 g s
v ² = 64 ² + 2 x 32 x 480
v ² = 64 ² + 30720
v = 187 ft / s (to nearest whole number)
2007-12-31 03:17:35 · answer #2 · answered by Como 7 · 0⤊ 0⤋
it will hit the ground with the velocity
= â [(64)^2 + 2*32*480] ft/sec = 186.59 ft/sec
2007-12-31 01:40:10 · answer #3 · answered by sv 7 · 0⤊ 0⤋
2gd = Vf^2 - Vi^2
Vf = sqrt[2gd + Vi^2]
Vf = sqrt[2(32)(480) + 64^2]
Vf = 186.6 ft/sec ANS
Hope I help.
teddy boy
2007-12-31 01:36:58 · answer #4 · answered by teddy boy 6 · 0⤊ 0⤋