Saturday

October 25, 2014

October 25, 2014

Posted by **Mima** on Sunday, September 16, 2012 at 4:52pm.

- physics -
**Elena**, Monday, September 17, 2012 at 4:34pmv₀⒳= v₀•cosα,

v₀⒴ =v₀•sinα,

v₀² =v₀⒳² +v₀⒴²,

v² =v⒳² +v⒴²,

v⒳= v₀⒳,

v⒴=v₀⒴ -g•t,

v² =v⒳² +v⒴² = v₀⒳²+(v₀⒴ -g•t)²=

=v₀⒳²+v₀⒴² -2 v₀⒴•g•t +(g•t)² =

= v₀²-2 v₀•sinα•g•t +(g•t)².

sinα= [v₀²-v²+(g•t)²]/2•v₀•g•t =

=[14.5² -12.4²+(9.8•0.272²]/(2•14.5•9.8•0.272) =

=0.823.

α=55.35°

**Answer this Question**

**Related Questions**

Physics - 2-D kinematics - A soccer ball is kicked with an initial horizontal ...

Physics - A soccer ball is kicked with an initial horizonal velocity of 18 m/s ...

science - A soccer ball is kicked with an initial speed of 8.4 m/s in a ...

algebra 1 NEED NOW!!! PLEASE HELPPP - The height of a soccer ball that is kicked...

algebra 1 NEED NOW!!! PLEASE HELPPP - The height of a soccer ball that is kicked...

Physics - A soccer ball is kicked with an initial horizontal velocity of 19.0 m/...

math - When a soccer ball is kicked with a vertical speed of 25 m/s its height, ...

AP Physics - A soccer ball is kicked with an initial speed of 19.6 m/s in a ...

math - The height of a soccer ball that is kicked from the ground can be ...

physics - A soccer ball is kicked from the ground with an initial speed of 18.0 ...