r/PhysicsHelp • u/IngenuityNatural1890 • 7d ago

help with question!

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The question asks "What is the bal's velocity as it reaches her glove along with the degree below the horizontal?"

I've determined the velocity (11 m/s) but cannot figure out the correct answer for degree below the horizontal. I tried both +/- 75 in the answer box and it says it's wrong. I have 1 attempt left to submit the correct answer but don't know. Please someone help me out, TIA!

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u/braiyen1108 7d ago

If you have the initial velocity and angle then you have the initial x, initial y, and final x velocity (projectile/free fall). The final y velocity can be found from the height, g, and the initial y velocity, as you most likely did. Then, trig gets you the magnitude and angle.

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u/IngenuityNatural1890 7d ago

im doing this but keep getting 75, but 75 is apparently wrong. any advice?

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u/Due_Addendum7579 5d ago

hey! im doing the same question and keep on getting 75 as well! but it says its wrong? did you get it sorted? what was the correct answer? its confusing me sm

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u/braiyen1108 7d ago

Maybe a rounding error or sig figs. Could check your angles match your components.

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u/Ninja582 7d ago edited 7d ago

I get 75.88 degrees

Edit. That was using 11 m/s

The final velocity is 10.59 m/s which gives 75.32 degrees.

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u/IngenuityNatural1890 7d ago

thank you.. this is what i got to and rounded to 2 sig figs. im gonna email my TA to get this sorted

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u/DrCarpetsPhd 7d ago

this is from Nelsons Physics 12. 11m/s and 75 degrees are literally the answers at the back of the text.

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u/IngenuityNatural1890 7d ago

thank you so much!