finding x and y components of velocity?

Question:

A soccer player kicks the ball off the ground at an angle Θ above the horizontal. The ball is in the air for 3.0 seconds and lands 40 m away (assume the field is level).

a) Make a table of x and y components and fill out what you know, based on the problem statement above, and your knowledge of kinematics (don’t calculate anything yet). Draw a box around your table.
b) Now work outside of the box. Find the soccer ball’s initial horizontal (vox) velocity component.
c) Find the soccer ball’s initial vertical (voy) velocity component.

Attempt:

a)
x-component

  • d = 40m
  • t = 3s
  • vo = 0m/s
  • a = 0m/s2

y-component

  • a = 9.8m/s2
  • t = 3s
  • v = 0m/s

b)
d = vt
40 = 3v
v = 13.3m/s

c)
v = vo – gt
v = 0 – (9.8)(3)
v = -29.4m/s

am I on the right track or am I supposed to find that missing angle?

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