18. Describe in your own words what is happening to the velocity in the y direct

Question

18. Describe in your own words what is happening to the velocity in the y direction as the cannonball leaves the cannon and flies through the air 19. What do you notice about the velocity in the x direction? lad the same 20. Why do you think this isn't changing? (Hint: What is affecting the velocity in the y direction, but not the x direction?) Drcouse the magnitudc df the vclocity 1s greoter Predicting and calculating Imagine a cannon was shooting at an initial velocity of 20 m/s at 75° above the horizontal. We are going to predict its range and check with the simulation. Draw the scenario below

Explanation / Answer

Vx = V cos theta

Vx = 20 cos 75

Vx = 5.17 m/s

Vy = Vsin theta

Vy = 20 * sin 75

Vy = 19.31 m/s

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t = -Vy/a

t = 19.31/9.81

t = 1.97 sec

time of ascent = 1.97 sec

time of flight = Tf =2 ta

Tf = 3.94 sec

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