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- Thread starter shaunk
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learningphysics

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How did you approach the problem?

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learningphysics

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Looks good to me.

so

Vx*t = 90

Vcos45*t = 90

Vsin45*t - (1/2)gt^2 = 0

you've got 2 equations with 2 unknowns... you can simplify the second equation by dividing by t (since the answer we need is not t = 0)...

Vsin45 - (1/2)gt = 0

so solve:

Vcos45*t = 90

Vsin45 - (1/2)gt = 0

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