physics
posted by katie .
A cannonball is shot (from ground level) with an initial horizontal velocity of 41 m/s and an initial vertical velocity of 22 m/s.
1) What is the speed of the cannonball 1.7 seconds after it was shot?
2) How high above the ground is the cannonball 1.7 seconds after it is shot?

physics 
Scott
1) the horizontal velocity stays constant
... the vertical velocity is decreased by gravitational acceleration ... 9.8 m/s^2
... 22  (1.7 * 9.8)
... add the two velocity vectors to find the resultant
2) you have the vertical velocity at 1.7 s
... average it with the initial (22 m/s)
... multiply the average by 1.7 s to find the height 
physics 
Henry
Vo = Xo + Yo = 41 + 22i m/s.
1. V = Y = Yo + g+t = 22  9.8*1.7 = 5.34 m/s.
Vo = Xo + Yi = 41 + 5.34i = (Convert to polar form).
2. Y^2 = Yo^2 + 2g*h.
5.34^2 = 22^2  19.6h, h = ?.
Respond to this Question
Similar Questions

physics
A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. 1) What is the initial speed of the cannonball? 
pyhsics
A cannonball is shot (from ground level) with an initial horizontal velocity of 36.0 m/s and an initial vertical velocity of 21.0 m/s. 1) What is the initial speed of the cannonball? 
physics
A cannonball is shot (from ground level) with an initial horizontal velocity of 33.0 m/s and an initial vertical velocity of 25.0 m/s. What is the initial speed of the cannonball? 
Physics
A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect … 
Physics
A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect … 
Physics
A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect … 
Physics
A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect … 
Physics
A cannonball is fired with a velocity of 200 m/s at an angle of 25 degrees above the ground. After the total flight of 45.6 seconds, the cannonball returns to the ground. Calculate: the initial horizontal and vertical components of … 
Physics
A cannon shoots a cannonball with an initial speed of 25 m/s at an angle 13. 1. What is the x component of the cannonballs initial velocity Vox? 
Physics
A cannon shoots a cannonball with an initial speed of 25 m/s at an angle 13. 1. What is the x component of the cannonballs initial velocity Vox?