Thursday

October 23, 2014

October 23, 2014

Posted by **anonymous** on Saturday, January 26, 2013 at 2:55am.

What was the initial speed of the ball?

How high does the ball rise above the point where it struck the bat?

- physics -
**Damon**, Saturday, January 26, 2013 at 5:12ams = initial speed

u = horizontal speed = s cos 26 = .899 s

Vi = initial speed up = s sin 26 = .438 s

It is not clear to me what your units are. If feet use g = 32 ft/s^2. If meters use g = 9.81 m/s^2. I assume from the 355 that you are using feet.

u is constant during the flight

d = u t

355 = .899 s t

so t = 395/s

now the vertical problem

for half of time t the ball is going up and the vertical speed is zero at the top

v = Vi - 32 * time rising

0 = .438 s - 32 (t/2)

16 t = .438 s

t = .0274 s

so we have two equations for t

395/s = .0274 s

s^2 = 14429

so

s = 120 ft/s

now for height

t = .0274 s

t = 3.29 seconds in the air

so 1.65 seconds rising

initial speed up = 120 sin 29 = 58.2

so average speed up = 58.2/2 = 29.1

h = 1.65 * 29.1 = 48 feet

**Answer this Question**

**Related Questions**

physics - A batted baseball leaves the bat at an angle of 35.0 degrees above the...

Physics - I solved part A but not part B: A batted baseball leaves the bat at an...

Physics - A batted baseball leaves the bat at an angle of 30.0 degrees about the...

physics - A batted baseball, which leaves the bat at an angle 〖30〗...

Physics - A batted baseball leaves the bat at an angle of 30.0 degrees about the...

physics - A ballplayer standing at homeplate hits a baseball that is caught by ...

physics - A ballplayer standing at homeplate hits a baseball that is caught by ...

Physics - The velocity of the baseball as it leaves the bat is 38.2 m/s. ...

Physics - Please Help!! A baseball clears a 3m tall wall positioned 120 m from ...

Physics - A major leaguer hits a baseball so that it leaves the bat at a speed ...