Posted by **Alex** on Sunday, October 30, 2011 at 5:30pm.

You throw a ball with a speed of 30 m/s at an angle of 40.0° above the horizontal directly toward a wall. The wall is 22.0 m from the release point of the ball.

(a) How long does the ball take to reach the wall?

(b) How far above the release point does the ball hit the wall?

(c) What are the horizontal and vertical components of its velocity as it hits the wall?

- Physics -
**Henry**, Tuesday, November 1, 2011 at 5:37pm
Vo = 30m/s @ 40deg.

Xo = hor. = 30cos40 = 23m/s.

Yo = ver. = 30sin40 = 19.28m/s.

a. Dh = VT = Hor. dist.

T = Dh / V = 22 / 23 = 0.96s =.

2t = T = 0.96,

t = 0.96 / 2 = 0.48s to reach wall.

b. t(up) = T/2 = 0.96 / 2 = 0.48s.

d(up) = Vo*t + 4.9t^2,

d(up)=19.28*0.48 -4.9(0.48)^2 = 8.125m

c. X = Xo = hor = 30cos40 = 23m/s.

Y^2 = Yo^2 + 2gd,

Y^2 = (19.28)^2 - 19.6*8.125 = 212.47,

Y = ver. = 14.6m/s.

## Answer This Question

## Related Questions

- Physics - You throw a ball with a speed of 25 m/s at an angle of 40.0° above the...
- science - You throw a vall toward a wall with a speed of 25m/s and at an angleof...
- physics - In a friendly game of handball, you hit the ball essentially at ground...
- Physics - In a friendly game of handball, you hit the ball essentially at ground...
- Physics - In a friendly game of handball, you hit the ball essentially at ground...
- Physics - In a friendly game of handball, you hit the ball essentially at ground...
- physics - You throw a ball toward a wall with a speed of 25m/s and at an angleof...
- Physics - A cannon ball is fired from ground level with a speed of 86.0 m/s at ...
- physics - A mass is thrown upward towards a vertical wall. If the release point ...
- Physics - A 275-gram ball bounces off a wall. The ball stays in a horizontal ...

More Related Questions