A ball is released with the initial velocity of 80 ft/sec at an angle of 35 degrees. Determine the radius of curvature of the trajectory and the time rate of chance of the speed a) just after release b) at the apex c) 2 sceonds after release.
The answers are: a) p = 243 ft, v = -18.47 ft/sec^2.
b) p = 133.4 ftm v' = 0.
c) p = 149.7 ft, v'' = 8.75 ft/sec^2.