Solve the problem.

A bad punter on a football team kicks a football approximately straight upward with an initial velocity of89ft/sec.

a.If the ball leaves his foot from a height of4ft, solve the equation for the vertical heights(in ft) of the balltseconds after being kicked.

b.Find the time(s) at which the ball is at a height of102.2125ft. Round to 1 decimal place.

Select one:

a.s = -9.8t2+89t+4;2.5sec and6.6sec

b.s = -16t2+89t+4;1.5sec and4sec

c.s = -9.8t2+89t+4;1.5sec and4sec

d.s = -16t2+89t+4;2.5sec and6.6sec