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Start the video at time 35 minutes for help with the straight up/straight down problems #s 1-3.

NOTE: #2 should read "A stone is launched VERTICALLY upward...."

Horizontally Launch review.

ANSWERS to the handout 

1a) dy = 122.5 m                   1b) t = 5s

2a) Vyi = 68.6 m/s                  2b) dy = 240.1 m

3a) 0.61 s                               3b) 5.94 m/s

4a) t = 1.92 s                          4b) Vx = 15.63 m/s

5a) dy = -3.54 m       5b) dx = 1.45 m       5c) Vyf = -8.33m/s