I've been having some problems with these problems, I'd appreciate any help. 1. There are 2 people standing on a roof 80 m high, person #1 throws a ball straight up in the air with an initial velocity of 20 m/s, person #2 has a replica of the ball and drops it off the roof at the same initial velocity. How much sooner does #2 hit the ground than #1? What is the difference in their final velocities? What is the displacement between #1 and #2 2. There is a race between a rabit and tourtise, the rabit rests for 10 min before starting and is 50 times faster than the tourtise. The tourtis's speed is 5 cm/s, and it ends up loosing the race by 100 cm. How longs the race? How long does the race last? Thanks for the Help!