A home run is hit in such a way that the baseball just clears a wall 14 m high, located 112 m from home plate. The ball is hit at an angle of 37° to the horizontal, and
air resistance is negligible. (Assume that the ball is hit at a height of 1.0 m above the ground.)
(a) Find the initial speed of the ball.
74.6916
X
Write the expressions for the horizontal and vertical positions as functions of time. Then use the equations to find the initial speed and the time when the
baseball reaches the height of interest. m/s
(b) Find the time it takes the ball to reach the wall.
1.87758
X
You appear to have calculated the elapsed time correctly from your answer for the initial speed, but because the initial speed you calculated was incorrect,
your answer for the elapsed time is also incorrect. s
(c) Find the velocity components of the ball when it reaches the wall.
x-
59.65136
X
component You appear to have calculated the horizontal velocity component correctly from your answer for the initial speed, but because the initial speed
you calculated was incorrect, your answer for the horizontal velocity component was also incorrect. m/s
y-
26.55024
X
component You appear to have calculated the vertical velocity component correctly from your answers for the initial speed and time of travel, but because
at least one of the previous answers you used was incorrect, your answer for this part is also incorrect. m/s
Find the speed of the ball when it reaches the wall.
65.29318
X
You appear to have calculated the speed correctly from your answers for the horizontal and vertical components of velocity, but because at least one of these
previous answers was incorrect, your answer for this part is also incorrect. m/s