Monday, February 13, 2012

My question is below?

can someone help me???



Romeo is tossing pebbles at Juliet's window to wake her. Unfortunately, she is a sound sleeper and he finally throws too large a pebble too fast. If Romeo is standing at the edge of a rose garden h = 7.1 m below her window and d = 7.0 m from the base of the wall (Fig. 3-54), how fast are the pebbles going when they hit her window? Assume the pebbles strike the window horizontally.



A Hollywood daredevil plans to jump the canyon shown in Fig. 3.36 (d=56 m, h=14.5 m) on a motorcycle.

Assume he desires a 2.9 second flight time.

(a) What is the correct angle for his launch ramp?

° (above the horizontal)

(b) What is his correct launch speed?

m/s

(c) What is the correct angle for his landing ramp?

° (below the horizontal)

(d) What is his predicted landing speed? (Neglect air resistance.)

m/s

My question is below?
NICE ONE


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