bush? 6-19 Romeo decides to toss a note to Juliet while she is standing on her b

Question

bush? 6-19 Romeo decides to toss a note to Juliet while she is standing on her balcony. He has weighted it with a rock so that he can throw it properly. He stands back from her house and throws it at a slight angle so that she can catch it at the top. , Given: The note and attached rock have an initial horizontal velocity of 2.8 m/s and an initial upward velocity of 6.8 m/s. The note is in the air for 0.58 s. (a) How fast and in what direction did Romeo throw the rock? (b) What is the vertical distance between Romeo and Juliet? (c) What is the vertical velocity of the rock just before Juliet Find: catches it? 0s

Explanation / Answer

a)

given

Vox=2.8 m/s

Voy=6.8 m/s

The net velocity is

V=sqrt(2.82+6.82)=7.354 m/s

direction

o=tan-1(6.8/2.8)=67.6o

b)

from

Y=Voyt+(1/2)at2

Y=6.8*0.58-(1/2)*9.8*0.582

Y=2.3 m

c)

Vfy=Voy+at

Vfy=6.8-9.8*0.58

Vfy=1.116 m/s

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