Sunday

February 1, 2015

February 1, 2015

Posted by **Chanel** on Friday, October 12, 2012 at 4:15pm.

A. How long does the ball take to reach the goal post? (5 points)

B. What is the ball’s speed when it reaches the goal post? (5 points)

C. By how much is the ball above or below the crossbar when it reaches the plane of the goal post? (5 points)

- Physics -
**Steve**, Friday, October 12, 2012 at 4:29pmin the x-direction,

vx = 22*cos52º = 13.5m/s

it travels 36m in 36/13.54 = 2.66 seconds

neglecting air resistance

vy = 22*sin52º - 9.8t = 17.34 - 9.8*2.66 = -8.73

vx is still 13.54

use pythagorean theorem to add the vectors

y = 0 + 17.34t - 4.9t^2 = 17.34*2.66 - 4.9*2.66^2 = 11.45

so, it clears the bar

**Answer this Question**

**Related Questions**

English - Can anyone check this text and if there are any mistakes, fix it? I am...

math-fractions - last season a little league baseball team traveled a total of ...

Math - You play a game where you win $1.00 for each dot that turns up on a fair ...

Math - You play a game where you win $1.00 for each dot that turns up on a fair ...

Stats - Checking the weather. 60% chance of rain at the bears football game. In ...

stats - Checking the weather. 60% chance of rain at the bears football game. In ...

Math - A game is played by throwing darts at a target. A player can choose to ...

Math - A game is played by throwing darts at a target. A player can choose to ...

Algebra - The Indians and Yankees are to face each other in a best two out of ...

maths, economics, game theory - 1. What is a degenerate game? 2. Is the ...