physics
posted by Anonymous .
calculate the range of the projectile using the initial speed and angle. use 9.8m/s. Initial speed 18m/s and the is 75 degrees. I came up with 8.29 is that right

At the max. height, Vf = o.
Vf^2 = Vi^2 + 2gah = o,
(18)^2 + 2*(9.8)h = 0,
324  19.6h = 0,
19.6h = 324,
h = 324 / 19.6 = 16.5m = Range.
Your ans. is twice mine; check your math for error.
Respond to this Question
Similar Questions

physics
The range R of a projectile is defined as the magnitude of the horizontal displacement of the projectile when it returns to its original altitude. (In other words, the range is the distance between the launch point and the impact point … 
physics
a golf ball with an initial angle of 38 degrees lands exactly 240 m down the range on a level course. neglecting air friction, what initial speed would achieve this result? 
physics
Calculate the maximum height using the initial speed, halftime, and angle. The initial speeed is 18m/s, half time is 1.8, and the angle is 75. And how is this written out to solve. 
Calculus (Gr.12) Math
I am not sure how to do this question I know I have to take the derivative but then I am left w/ to unknowns. If a projectile is shot up hill the distance (range) of the landing point up the hill depends on the initial speed of the … 
Physics
For a given initial projectile speed, you observe that the projectile has a certain range R at a launch angle A = 30 degrees. For what other launch angle will the projectile have the same range (assuming the same initial projectile … 
Physics
A projectile is launched at an angle of 34.0o above the horizontal. The projectile has a mass of 1.50 kg and is given an initial speed of 20.0 m/s. a) What is the initial kinetic energy of the projectile? 
Physics
Calculate the maximum height using the initial speed, halftime, and angle. The initial speeed is 18m/s, half time is 1.8, and the angle is 75 
physics
Calculate the range of the projectile using the initial speed and angle. Use g = 9.8m/s your calculation. Initial speed is 18m/s Angle is 75 Help please !! 
PHYSICS1
Calculate the range (using g=9.8m/s) and the height of the pumpkin using the initial speed ( 18m/s), halftime (1.7) and angle (75). 
Physics
A golf ball with an initial angle of 34 degrees lands exactly 240 m down the range on a level course. a.) Neglecting air friction, what initial speed would achieve this result?