1. a ball is thrown horizontally off a building that is 30m high with an initial velocity of 3 m/s . if an identical ball is thrown again horizontally from the same height at a velocity of 6 m/s, what happens to the flight time?
a. flight time is doubled
b. flight time is cut in half
c. flight time is the same
d. flight time is exponentially increased
2. where is the vertical velocity of a projectile the smallest?
a. right before it hits the ground
b. it is constant the entire flight
c. at the top of the trajectory
