I need help setting up this problem. Please, can anyone help? Thanks. A cannon b

Question

I need help setting up this problem. Please, can anyone help? Thanks. A cannon ball was fired at a wall that was 300 m away. The ball was fired from an incline of 40 degrees what timewill it take for the ball to hit the wall when the initial velocityof the cannon ball was 68 m/s. At what height did the ballhit the wall?
A cannon ball was fired at a wall that was 300 m away. The ball was fired from an incline of 40 degrees what timewill it take for the ball to hit the wall when the initial velocityof the cannon ball was 68 m/s. At what height did the ballhit the wall?

Explanation / Answer

The first thing that you need to do is separate out the initalspeed into intial velocity components in the x and ydirection cos 40 degrees * 68m/s = vox = 52.09m/s sin 40 degrees * 68m/s = voy = 43.71m/s Since there is no acceleration in the x-direction, t = x/vox = 300m/52.09m/s = 5.76s Now that you know the time that the ball has spent in the air,you can calculate the height that it reaches on the wall at5.76s y = voyt + 1/2gt2 y = 43.71m/s*5.76s + 1/2 -9.8m/s2 *(5.76s)2 y = 89.2m Hope that helps y = 89.2m Hope that helps

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