Wednesday

April 1, 2015

April 1, 2015

Posted by **Kelsey** on Tuesday, March 13, 2012 at 1:23am.

A)What is the speed of the ball just before it strikes the ground?

B)What is the answer for part A) if the initial velocity was directed at an angle of 50.9 degrees below the horizontal?

- Physics -
**drwls**, Tuesday, March 13, 2012 at 1:53amA) The horizontal velocity component will remain

Vx = 13.1 cos 50.9

and the vertical component will increase so that

Vy^2 - (13.1 sin 50.9)^2 = 2 g H

where H is the height of the building.

B) You will get the same answer, since the (13.1 sin theta)^2 term is squared in the Vy equation, and cos theta = cos(-theta)

**Answer this Question**

**Related Questions**

Physics - A baseball is thrown from the roof of 23.5m -tall building with an ...

Physics - A baseball is thrown from the rood of a 27.5m tall building with an ...

physics - a ball is thrown horizontally -> from the roof of a building 45.0 ...

Physics - A baseball is thrown with an initial velocity of 37 m/s at an angle of...

Physics - A man stands on the roof of a 19.0 m-tall building and throws a rock ...

physics - A ball is thrown horizontally from the roof of a building 47.9 m tall ...

Physics(urgent) - A ball is thrown horizontally from the roof of a building 58.5...

physics - A baseball thrown at an angle of 65.0^\circ above the horizontal ...

Physics - A rock is thrown vertically upward with a speed of 11.0 from the roof ...

physics - In the problem, please assume the free-fall acceleration g = 9.80 m/s2...