Posted by jena on Saturday, March 8, 2008 at 12:37am.
A baseball is hit with a horizontal speed of 16 m/s and a vertical speed of 16 m/s upward. What are these speeds 5 s later? horizontal speed ?? m/s
vertical speed ?? m/s

PHYSICS  drwls, Saturday, March 8, 2008 at 2:04am
The horizontal speed stays the same until the ball hits the ground. Vertical speed v obeys the equation
Vy = Vy,o  g t = 16  (9.8)*5 = 33 m/s, also until it hits the ground.
Unless the ball was hit off a cliff, it will have hit the ground well before 5 seconds of flight. After 3.27 s, to be exact. The vertical velcoity after it hits the ground will then be zero.
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