Monday

November 24, 2014

November 24, 2014

Posted by **teresa** on Wednesday, October 19, 2011 at 8:57am.

9. How high will the ball get from the bottom of a canyon?

10. How fast will the ball be moving when it hits the ground?

- physics -
**bobpursley**, Wednesday, October 19, 2011 at 9:20amvertical velocity initial: 20sin30=10m/s

time in air:

hf=hi+10*t-4.9t^2

0=20+10t-4.9t^2 solve for t, time in air.

horizonal distance= 20cos30*t

how high? at the top, v is zero in the vertical, 0=10-9.8t solve for time to top, t hf=20+10t-4.9t^2 solve for hf

how fast?

use the time in air t,

vf=20t-9.8t^2

- physics -
**bobpursley**, Wednesday, October 19, 2011 at 9:20amoops, on how fast

vf=20-9.8t

**Answer this Question**

**Related Questions**

physics - A baseball pitcher throws a pitch with an initial velocity of 39.9 m/s...

physics - A person throws a physics book off of a cliff at an initial speed of ...

Gen physics - A 55.0 kg high school baseball pitcher is holding a 149 g baseball...

College Physics - Bob has just finished climbing a sheer cliff above a beach, ...

Physics based Calculus - Bob has just finished climbing a sheer cliff above a ...

Physics - Victor drove his truck off a cliff that was 45m high, and it landed ...

College Physics - A students stands at the top of a high vertical cliff and ...

Physics - A baseball teams ace pitcher throws fast balls at a velocity of 160kmh...

Physics - A daredevil decides to jump across a 15 m wide canyon on his ...

Physics - Now assume that the pitcher in Part D throws a 0.145-kg baseball ...