Posted by **Anonymous** on Friday, September 30, 2011 at 12:35pm.

A stone is thrown from ground level at 70m/s. Its speed when it reaches its highest point is 48 m/s. Find the angle, above the horizontal, of the stone’s initial velocity.

- physics -
**Steve**, Friday, September 30, 2011 at 1:23pm
Check me on this, I'm a little rusty.

The initial velocity is 70. Since the horizontal speed never changed, that means that the x-component was 48. So, cos θ = 48/70, so θ = 46.7°

- physics -
**Jimmy**, Friday, September 30, 2011 at 6:38pm
thank you

## Answer this Question

## Related Questions

- Physics - A stone is thrown from ground level at 72 m/s. Its speed when it ...
- Physics - A stone is thrown from ground level at 84 m/s. It's speed when it ...
- Physics - From the edge of the rooftop of a building, a boy throws a stone at an...
- physics - From the edge of the rooftop of a building, a boy throws a stone at an...
- Physics - From the edge of the rooftop of a building, a boy throws a stone at an...
- physics - From the edge of the rooftop of a building, a boy throws a stone at an...
- physics - a stone is thrown straight up from a 50m high building and hits the ...
- physics - A stone is thrown from a building of height 40m and reaches a maximum ...
- physics - A stone thrown off a bridge 20 m above a river has an initial velocity...
- physics - A suspension bridge is 66.0 m above the level base of a gorge. A stone...

More Related Questions