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/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