Projectile Motion: A high-speed dart is shot from ground level with a speed of 150 m/s at an angle 30° above the horizontal. What is the vertical component of its velocity after 4.0 s if air resistance is neglected?
A. 150 m/s
B. 36 m/s
C. 130 m/s
D. 75 m/s
E. 38 m/s
Answer: B
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