Posted by **rhea** on Saturday, November 24, 2012 at 6:01am.

a projectile shot at an angle of 60 degrees above the horizontal strikes a building 80 ft away at a point 48 ft above the point of projection (a) find the velocity of projection. (b) find the magnitude and direction of the velocity of the projectile when it strikes the building.

please help me,,,

thanks you

- physics -
**drwls**, Saturday, November 24, 2012 at 7:01am
(a) Write two independent equations for the time of flight T, based upon (1) the initial vertical component and (2) the horizontal component of initial velocity, Vo. Set the two times equal to eliminate T, and then solve for Vo

(b) Vx = Vo cos60

Vy (at impact) = Vo*sin60 -g*T

Fot T, use 80 ft/(Vo*cos60)

- physics -
**rhea**, Sunday, November 25, 2012 at 4:30am
thank you so much ^^

## Answer This Question

## Related Questions

- projectile motion - A missile is fired upwards from the top of a cliff in a ...
- Physics - A projectile is launched with an initial velocity of 268 m/s, at an ...
- physics - A baseball thrown at an angle of 65.0^\circ above the horizontal ...
- physics - At a time t after being projected from the ground, a projectile is ...
- physics - A projectile is shot from the edge of a cliff 125 m above ground level...
- physics - A projectile is shot from the edge of a cliff h = 125 m above ground ...
- Physics - A man stands on the roof of a building that is 50 m tall and throws a ...
- Physics - A man stands on the roof of a building that is 50 m tall and throws a ...
- 12th grade - A projectile is shot from the edge of a cliff h = 125 m above ...
- Physics - A projectile is fired with an initial speed of 28.0 m/s at an angle of...

More Related Questions