Strik3r
Sep16-08, 06:36 PM
1. The problem statement, all variables and given/known data
Well to sum up the question: a football kicker kicks a ball with 20m/s initial velocity with a 53 degree angle. the goal post is 36m away and is 3.05m tall. does the ball pass the goal post? does the ball approach the crossbar while still rising or falling?
range=36m
acceleration= -9.8 m/s/s
V initial = 20m/s
angle theta= 53 degrees
height of post=3.05m
2. Relevant equations
range= (velocity initial x) multiply (time)
vix (velocity initial x) = vi cos angle theta
viy (velocity initial y) = vi sin angle theta
y=(viy) multiply (time) + 0.5at^2
3. The attempt at a solution
using the above information i found the that the ball crosses the goal post by 0.85meters.
here the problem. i dont know how to do the second part. any and all help will be appreciated thx.
Well to sum up the question: a football kicker kicks a ball with 20m/s initial velocity with a 53 degree angle. the goal post is 36m away and is 3.05m tall. does the ball pass the goal post? does the ball approach the crossbar while still rising or falling?
range=36m
acceleration= -9.8 m/s/s
V initial = 20m/s
angle theta= 53 degrees
height of post=3.05m
2. Relevant equations
range= (velocity initial x) multiply (time)
vix (velocity initial x) = vi cos angle theta
viy (velocity initial y) = vi sin angle theta
y=(viy) multiply (time) + 0.5at^2
3. The attempt at a solution
using the above information i found the that the ball crosses the goal post by 0.85meters.
here the problem. i dont know how to do the second part. any and all help will be appreciated thx.