- #1
free-node-5
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Initial Velocity of a projectile, how?
If I have a problem that says the x and y distance of a target from a starting position, and only gives the angle at which the particle is launched, how do I find the required initial Velocity for its launch?
I've been given the following equations to work with:
Vf = Vi + at
xf = xi + Vit + (.5)at2
Vf2 = Vi2 + 2ad
I've spent hours trying to find a solution like this and can't seem to get anywhere. At one point I wrote out a huge equation with a bunch of trig stuff and it said a human threw a ball at over 513m/s so I know it must have been wrong.
One line I have written in my work says:
1.05=( Visin43 )/( Vicos43 ) - ( 4.9 * 9 )/( Vi cos 43 )
but I'm just asking in general, how do you do this?
If I have a problem that says the x and y distance of a target from a starting position, and only gives the angle at which the particle is launched, how do I find the required initial Velocity for its launch?
I've been given the following equations to work with:
Vf = Vi + at
xf = xi + Vit + (.5)at2
Vf2 = Vi2 + 2ad
I've spent hours trying to find a solution like this and can't seem to get anywhere. At one point I wrote out a huge equation with a bunch of trig stuff and it said a human threw a ball at over 513m/s so I know it must have been wrong.
One line I have written in my work says:
1.05=( Visin43 )/( Vicos43 ) - ( 4.9 * 9 )/( Vi cos 43 )
but I'm just asking in general, how do you do this?