need correct answer Projectil A hot air balloon competition requires a balloonis
ID: 1872301 • Letter: N
Question
need correct answer
Projectil A hot air balloon competition requires a balloonist to drop a ribbon onto a target on the ground. Initially the hot air balloon is 50 meters above the ground and 100 meters from the target. The wind is blowing the balloon at v 15 e to travel directly over the target. The ribbon is heavy enough that any effects of the air slowing meters/sec on a cours the vertical velocity of the ribbon are negligible. How long should the balloonist wait to drop the ribbon so that it willi hit the target? sec SubmitExplanation / Answer
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1.
Time taken by the ballon to reach the ground
Y=Yo+Voyt-(1/2)gt2
=>0=50+0-(1/2)*9.8*t2
t=3.193
Horizontal distance travelled during this time
X=Voxt =3.193*15=47.9 m
Ballon must travel a distance before dropping from ballonist is
D=100-47.9=52.1 m
Therefore
twait =52.1/15 =3.474 s
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