Jill throws a Javelin by first accelerating it from rest through 85 cm and releasing it from a height
of 2.2 m at an angle of 35 degrees and it goes a distance of 62 m.
A) What are the values of the vertical and horizontal components of initial velocity?
B) Find the following:
X-initial position, Y-initial position
X-final pos., Y-final pos.
X-velocity initial, X-velocity final
Y-velocity initial, X-velocity final
Acceleration in x and y direction
and t-final for X and Y
C) What is the magnitude of the impact velocity vector?
D) What is the impact angle?
I'm sure I have missed one:
x(t)=xi + (Vx)(t)
y(t)=yi + (Vy)(t) - (1/2)gt^2)
The Attempt at a Solution
I started writing down all my known terms and have the following from the given info:
Xi = 0
Yi = 2.2m
ax = 0
ay = -g = 9.8m/s^2
Yf = 0
Xf + 62
Theta = 35 degrees
At this point I went to plug known values into the x(t) and y(t) equations to find unknowns. The needed unknowns I see now are velocity and time of impact.
I am completely stumped on the next step to take from here to find velocity or time of impact. Any help would be appreciated.