Thursday

April 2, 2015

April 2, 2015

Posted by **Sam** on Thursday, September 23, 2010 at 2:34pm.

- Physics -
**bobpursley**, Thursday, September 23, 2010 at 2:44pmWell, you have some algebra ahead.

Vertical:

155=VsinTheta*t-4.9t^2

Horizontal:

195=VcosTheta*t

you are given t.

So you have two equations, two unknowns.

Here is what I suggest. Put both equations in the form of

V*trigfunction=some number

then square both sides.

add the equations, you should get something like this:

V^2(cosTheta ^2 + sinTheta ^2)=number^2

well, you know the ( ) is 1, which allows you to solve for V. Then substitute back to solve for theta.

Have fun.

**Answer this Question**

**Related Questions**

Physics - A projectile is launched from ground level to the top of a cliff which...

physics - A projectile is launched from ground level to the top of a cliff which...

physics - A projectile is launched from ground level to the top of a cliff which...

physics - A projectile is launched from ground level to the top of a cliff which...

Physics - A projectile is launched from ground level to the top of a cliff which...

math - A projectile is launched from ground level to the top of a cliff which is...

physics - A projectile is fired at an angle of 30ᵒ above the horizontal ...

physics - projectile is launched horizontally from edge of cliff 20 m high with ...

Physics -.- - A projectile is shot horizontally at 220 m/s from the top of a 620...

Physics 124 - A projectile is fired from the top of a cliff at 14.2 m/s at an ...