A cannonball is fired from a gun with a muzzle velocity of 20 m/s at an angle of

Question

A cannonball is fired from a gun with a muzzle velocity of 20 m/s at an angle of 60 degrees above the horizontal. What are the x and y components of the initial velocity? 10,17.3205) m/s Computer's answer now shown above. You are correct. Previous Tries Your receipt no. is 155-4241 How long (in seconds) will the cannonball be in flight before striking the ground? 2.02 The first step requires that we seperate the initial velocity, 20 m/s, into x and y components to determine the vertical (y) component of the velocity: vox-20 cos60°, Voy-20 sin60°. The time of flight for the cannonball is then found as though it were simply thrown vertically upwards at a speed of Voy Oy. Submit Answer Incorrect. Tries 1/3 Previous Tries What is the range of the cannonball? Submit Answer Tries 0/3

Explanation / Answer

u = 20 m/s, g = 9.8 m/s2

theta = 60 deg

b) t = 2 u sin theta / g

= (2 * 20 * sin 60) / (9.8)

required time = 3.53 s

c) Range of cannon ball = u2 sin 2 theta / g

= [202 * sin (2 * 60)] / 9.8

range of cannon ball = 35.3 m

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