Friday

August 22, 2014

August 22, 2014

Posted by **Melissa** on Sunday, September 19, 2010 at 2:49pm.

- physics -
**Damon**, Sunday, September 19, 2010 at 3:07pmit falls

initial speed up = Vi = 8 sin 40

y = yo + Vi t -4.9 t^2

0 = 1 + 8 sin 40 t -4.9 t^2

solve for t, time to hit ground

horizontal velocity u = 8 cos 40 forever

find v at t = time to hit ground

v = Vi -9.8 t (will be negative, down)

tan angle = v/u

magnitude speed = sqrt(u^2+v^2)

- physics -
**Melissa**, Sunday, September 19, 2010 at 3:33pmWhen it says magnitude of velocity is that the same as the final velocity before impact? The word "magnitude" threw me off.

- physics -
**Damon**, Sunday, September 19, 2010 at 5:21pmmagnitude is the size sqrt (u^2+v^2)

**Related Questions**

physics - Julie throws a ball to her friend Sarah. The ball leaves Julie's hand ...

Physics - A child throws a ball with an initial speed of 8.00 m/s at an angle of...

Physics - Julie throws a ball to her friend Sarah. The ball leaves Julie's hand...

Physics - Julie throws a ball to her friend Sarah. The ball leaves Julie's hand ...

physics - A boy standing in a ditch throws a baseball upward toward his father. ...

physics - A person is riding on a flatcar traveling at a constant speed v1= 15 m...

physics - An Olympic basketball player shoots towards a basket that is 5.64 m ...

physics - An Olympic basketball player shoots towards a basket that is 5.66 m ...

Physics - A soccer player kicks a ball from the ground into the goal, which is ...

physics - 5) After catching the ball, Sarah throws it back to Julie. The ball ...