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Physics Question

OP Tue 27 Oct 2015 23:38:44 No.7620454 View Reply Report Delete

Quoted By:

Ok /sci/, I need your help. I'm NOT asking you to solve this. I just don't exactly know what I should do.
I know that Velocity is displacement/time, so part A must be 300m/s.
Part B has to be 200m from the initial point (since the ball is moving 100m per second)
>100m*2s=200m
Part C, D, and E is where I get lost. How am I supposed to know where the highest point is, and how far the ball will travel just by giving me the speed and angle of the ball?
The question does not say anything about air resistance, so I doubt that matters in this question.

Anonymous

Anonymous Tue 27 Oct 2015 23:51:40 No.7620468 Report Delete

Quoted By: >>7620470

The angle is needed for all parts of the question. The velocity can be decomposed into a vertical and a horizontal vector. The vertical one is counteracted by gravity. I'd neglect air resistance and assume 9.81m/s^2 downward acceleration.

OP Tue 27 Oct 2015 23:55:21 No.7620470 Report Delete

Quoted By:

>>7620468
So this is pretty much gonna involve me solving for the x-axis and the y-axis using sin and cos?

Anonymous

Anonymous Tue 27 Oct 2015 23:56:12 No.7620472 Report Delete

Quoted By:

the highest point will be the point where the ball will not be moving up or down. you can figure out the vertical velocity from that, and since air resistance is not involved you also know the horizontal velocity. simply set the vertical velocity at that point to your final velocity and solve for distance. e is asking what happens when the vertical displacement becomes 0, so set x to 0 and solve

Anonymous

Anonymous Tue 27 Oct 2015 23:57:40 No.7620476 Report Delete

Quoted By:

You did the first two parts incorrectly. Split the velocity into x and y components, take gravity into account, and solve from there.

Anonymous

Anonymous Wed 28 Oct 2015 00:01:12 No.7620483 Report Delete

Quoted By:

Intitally solve for the x and y components of the balls velocity, using the angle provided using cos and sin, the other parts should be solvable using formulas provided and accepting gravity as a constant negative force in the vertical component

OP Wed 28 Oct 2015 00:11:50 No.7620490 Report Delete

Quoted By:

Thanks anons, I appreciate the help.

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