As an aid in working this problem, consult Interactive Solution 3.41. A soccer player kicks the ball toward a goal that is 25.0 m in front of him. The ball leaves his foot at a speed of 16.2 m/s and an angle of 38.0 ° above the ground. Find the speed of the ball when the goalie catches it in front of the net.

15.77m/s

Explanation:

the information we have is:

initial velocity

distance:

angle: °

first we need to break down the velocity into its x and y components:

initial velocity in x (the velocity in x is constant):

and initial velocity in y (the velocity in y is not constant due to acceleration of gravity):

and now we find the time that the ball was in the air:

and with this time, we find the y component of the volicity at time 1.96s:

(negative because it points downward)

finally, to find the final velocity we use pythagoras:

a cold ice-tea.

pour in room temperature or cold water. cover the pitcher and refrigerate. steep white or green tea for 6 to 8 hours; steep black or oolong tea for 8 to 12 hours.jun 28, 2015