How far does the football travel horizontally before it hits the ground?

January 5, 2010 by admin · 1 Comment
Filed under: Physics 
football
flipnv86@sbcglobal.net asked:

A football is kicked with a speed of 18 m/s at an angle of 65 degrees to the horizontal.

a) How far does the football travel horizontally before it hits the ground?

b) What are the respective horizontal and vertical components of the initial velocity of the football?

Related Blogs

Related Blogs

Tags: , ,

Comments

One Response to “How far does the football travel horizontally before it hits the ground?”
  1. sojsail says:
    January 5, 2010 at 4:06 am

    Figure out b) first.
    Vh = Vo*cos(65)
    Vv = Vo*sin(65)

    a) Vvf = Vv + g*t
    where Vvf is final vertical velocity, Vv is initial vertical velocity g = 9.8 m/s^2, and t is time to return to earth. When it returns to earth it will have the same vertical speed it started with, in the opposite direction. Vvf = -1*Vv. Solve for t.

    Vh = x/t
    where x is the distance it travels horizontally. sojsail

Speak Your Mind

Tell us what you're thinking...