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kbarnes7
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a machine can toss a golf ball a distance of 120 m on a level playing field when the machine is set to an angle of 30 degrees. How far can the machine toss the ball when it is set to an angle of 45 degrees.
 11 months ago
 11 months ago
kbarnes7 Group Title
a machine can toss a golf ball a distance of 120 m on a level playing field when the machine is set to an angle of 30 degrees. How far can the machine toss the ball when it is set to an angle of 45 degrees.
 11 months ago
 11 months ago

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shubham.bagrecha Group TitleBest ResponseYou've already chosen the best response.0
dw:1379214266422:dw
 11 months ago

kbarnes7 Group TitleBest ResponseYou've already chosen the best response.0
ok so where do i go from there
 11 months ago

shubham.bagrecha Group TitleBest ResponseYou've already chosen the best response.0
\[R=\frac{u^2 \sin(2 \theta)}{g}\] \[\theta = 30 degrees\]R=120m \[120=\frac{u^2 \sin(2 *30)}{10}\] find u.
 11 months ago

shubham.bagrecha Group TitleBest ResponseYou've already chosen the best response.0
then find R for 45 degrees with this u.
 11 months ago

kbarnes7 Group TitleBest ResponseYou've already chosen the best response.0
ok, so is it 170 m, 98 m , 140 m , 85 m or 150 m? trying to check my answer
 11 months ago

shubham.bagrecha Group TitleBest ResponseYou've already chosen the best response.0
what u you got?
 11 months ago

shubham.bagrecha Group TitleBest ResponseYou've already chosen the best response.0
\[u^2 = \frac{120*10}{\sin 60}\] \[u^2 = 800\sqrt{3}\] now theta = 45 \[R=\frac{u^2 \sin(2*45)}{10}\] substitute value of u^2. \[R=\frac{800 \sqrt{3} \sin(2*45)}{10}\]
 11 months ago

shubham.bagrecha Group TitleBest ResponseYou've already chosen the best response.0
\[R=80\sqrt{3}\]
 11 months ago

kbarnes7 Group TitleBest ResponseYou've already chosen the best response.0
man i missed that up, so with sig figs.... 140 m?
 11 months ago
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