A football is kicked at ground level with a speed of 20.8m/s at an angle of 23.3 degress to the horizontal. How much later, in seconds, does it hit the ground?
Tf =(-20.8m/s x Sin 23.3)/-9.80m/s^2
this doesn't sound right to me
Physics (quick check) - bobpursley, Thursday, October 1, 2009 at 4:57pm
h(t)=h(0)+vvt-1/2 g t^2
0=0+20.8sin23.3 t - 4.9t^2
so your denominator is wrong.