Physics (AS & A Level) · Oct / Nov 2021 · Paper 12 · Question 3
A tennis ball is hit so that it leaves the racket with velocity v at an angle θ to the horizontal. The vertical component of the velocity is v_y. What is the magnitude of the horizontal component of v?
- Av sinθ
- Bv_y cosθ
- Cv_y sinθ
- D(v² − v_y²)^(1/2)
As printed in the paper
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Correct answer: D. (v² − v_y²)^(1/2)
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