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At the top of its path, a projectile launched at 50 m/s at 37 degrees (cos 37 = 0.8) has a speed of:
A30 m/s
B50 m/s
C0 m/s
D40 m/s
Answer & Solution
Correct answer: D. 40 m/s
Only the horizontal component remains at the peak, 50 x 0.8 = 40 m/s.
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