- #1
Kudo Shinichi
- 109
- 1
HELP! A question on Kinematics in 2D & 3D?
A gun is placed at the base of a hill whose slope makes an angle alpha with the horizontal. If the gun is set at an angle theta with the horizontal and has a muzzle velocity Vo, find the distance, measured along the hill, at which the bullet will fall.
I know that I need to separate this question into two equations/ two 1D problems (x-axis and y axis)
Velocity for x = Vo* cos(Θ-α) - g * t * sin(α)
X = Xo + Vo * t * cos(Θ-α) - 0.5 * g * t^2 * sin(α)
Velocity for y = Vo* sin(Θ-α) - g * t * cos(α)
Y = Yo + Vo * t * sin(Θ-α) - 0.5 * g * t^2 * cos(α)
But how can i figure out Vo, Θ, α, Xo, t and Yo
Please help me.
Homework Statement
A gun is placed at the base of a hill whose slope makes an angle alpha with the horizontal. If the gun is set at an angle theta with the horizontal and has a muzzle velocity Vo, find the distance, measured along the hill, at which the bullet will fall.
The Attempt at a Solution
I know that I need to separate this question into two equations/ two 1D problems (x-axis and y axis)
Velocity for x = Vo* cos(Θ-α) - g * t * sin(α)
X = Xo + Vo * t * cos(Θ-α) - 0.5 * g * t^2 * sin(α)
Velocity for y = Vo* sin(Θ-α) - g * t * cos(α)
Y = Yo + Vo * t * sin(Θ-α) - 0.5 * g * t^2 * cos(α)
But how can i figure out Vo, Θ, α, Xo, t and Yo
Please help me.