Homework Help: Physics

Posted by Thomas on Sunday, September 16, 2012 at 6:48pm.

1. 2D motion.
A cannon fires a ball with a velocity at 300 MPS. THe cannon has an angle of inclination of 50 degrees. The surface is flat. 1. What is the time of flight? 2. Where does it land? What is its maximum height? What is the velocity vector of the ball at impact in component notation? 5. What is the velocity vector of the ball at impact in polar notation?

Physics - Elena, Monday, September 17, 2012 at 4:56pm
1. t= 2vₒ•sinα/g
2. L=vₒ²•sin2α/g,
3. h= vₒ²•sin²α/2g,
4.v₀⒳= v₀•cosα =300•cos50=192.8 m/s
v₀⒴ =v₀•sinα =300•sin50=229.8 m/s
v= 192.8•i+229.8•j
5. v,α = 300,50°

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