February 23, 2017

Homework Help: physics

Posted by rmj on Saturday, February 14, 2009 at 9:10pm.

I'm having trouble getting the answer for the 2nd and 3rd questions.

# A soccer ball is kicked from the ground. When it reaches a height of 5.93 m, the velocity is v=6.45i+7.46j m/s.
1. Determine the maximum height that the ball reaches. (the right answer is 8.77 m)

2. Determine the total horizontal distance travelled by the ball.

3. What is the speed of the soccer ball just before it hits the ground?

for number 2, i found the total time from yf = yi + viyt - 1/2gt^2
and plugged it into vx=dx/t to get the horiz distance but i still can't
get the right answer
did i miss anything?

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