physics
posted by Tee .
A major leaguer hits a baseball so that it leaves the bat at a speed of 30.5m/s and at an angle of 36.9 degrees above the horizontal. You can ignore air resistance.At what two times is the baseball at a height of 8.50 above the point at which it left the bat? What is the magnitude of the baseball's velocity when it returns to the level at which it left the bat? What is the direction of the baseball's velocity when it returns to the level at which it left the bat?

physics 
drwls
The equation for height y (above the bat) vs time is
y = 30.5 sin 36.0 t  (1/2) g t^2
Set that equal to 8.5 m and solve for t.
The second question can be answered easily using energy considerations. The kinetic energy will be the same both times y = 0, since the potential energy will be the same.
The horizontal component of V will be the same, and the Vertical component will change direction but have the same magnitude.
Respond to this Question
Similar Questions

Physics
a baseball player leads off the game and hits the long home run. The ball leaves the bat at an angle of 30.0 degrees from the horizontal with a velocity of 40.0 m/s. how far will it travel in the air? 
physics
A major leaguer hits a baseball so that it leaves the bat at a speed of 31.5 and at an angle of 36.1above the horizontal. You can ignore air resistance. At what two times is the baseball at a height of 8.00 above the point at which … 
Physics Honors
A baseball player leads off the game and hits a long home run. The ball leaves the bat at an angle of 30 degrees from the horizontal with a velocity of 40 m/s. How far will it travel in the air? 
phyics
Find the horizontal range of a baseball that leaves the bat at an angle of 63 degrees, with the horizontal with an initial velocity of 160 km/hr. discard air resistance 
Physics
A major leaguer hits a baseball so that it leaves the bat at a speed of 28.0 and at an angle of 36.9 above the horizontal. You can ignore air resistance.At what two times is the baseball at a height of 9.50 above the point at which … 
Physics
A major leaguer hits a baseball so that it leaves the bat at a speed of 28.0 and at an angle of 36.9 above the horizontal. You can ignore air resistance. At what two times is the baseball at a height of 9.50 above the point at which … 
Physics
The velocity of the baseball as it leaves the bat is 38.2 m/s. Determine (a) the maximum height the baseball reaches, and (b) the total timke the baseball is in the air. Assume the baseball is caught at the same height above the ground … 
physics
major leaguer hits a baseball so that it leaves the bat at a speed of 29.0m/s and the angles of 36.9 above horizontal ignore resistance what two time is the baseball at a height of 10.0m above the point at which it left the bat? 
Physics
A pitcher throws a 0.192kg baseball, and it approaches the bat at a speed of 43.2 m/s. The bat does 69.8 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and … 
Physics
Anthony Rizzo hits a baseball in such a way that it leaves his bat traveling at 40.4 m/s at an angle of 26 degrees above the horizontal. When hit, the baseball is 1.2 m above the ground, is in fair territory, and is 127 meters away …