Darcy and raul are having difficulty conceiving a child. darcy ovulates every 28 days, and raul’s sperm count is normal. if we could observe raul’s sperm about an hour after ejaculation, however, we’d see that they appear to be moving only sluggishly. when raul’s sperm eventually encounter darcy’s oocyte, they appear to be incapable of generating an adequate acrosomal reaction. which process has probably gone wrong?

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s