Projectile Motion: Calculations and Help for 40 m/s Velocity and 20° Angle

AI Thread Summary
The discussion focuses on solving projectile motion problems with a velocity of 40 m/s at a 20° angle, using gravity at -9.8 m/s² without drag. The user seeks confirmation on their calculations for horizontal distance, vertical velocity, horizontal velocity, time in the air, and the force exerted by gunpowder on a cannonball. They report a horizontal distance of 170 meters, a vertical velocity of 13.7 m/s, and a horizontal velocity of 37.6 m/s, but express uncertainty about the time in the air, which they estimate at 20.7 seconds. Assistance is requested for verifying these answers and guidance on relevant equations of motion. The conversation emphasizes the importance of using trigonometric functions to derive velocities.
navee
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Hi I am doing Projectile Motion questions can you please help me, The Activity is on this website here

The question are these

Set velocity to 40 m/s and angel to 20° and gravity to -9.8 and uncheck the drag box check mark.

1) What is the horizontal distance the cannon travels ----> I get 170 meters is that correct

2) Calculate the vertical velocity (V y-axis) of the ball. show the trig steps
-----> I get 13.7 meters is that correct

3) Calculate the howizontal velocity (V x-axis) of the ball. show the trig steps
-----> I get 37.6 meters is that correct

4) Determine the amount of time the ball is in the air
-----> I get 20.7 seconds and I koe its wrong can you please help me

5) If the cannon is 1 m long, and the cannon ball has a mass of 15 kg, what is the force of the gunpowder on the cannon ball

-----> ok? how do i DO this please help and check my answers if they are right
 
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Do you have any equations of motion you are suppose to use? What have you tried?
 
like sin, or cos for determing the vix and viy and w/e
 

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