🏆 AP Exam Prep

A 2 kg block slides down a frictionless ramp from a height of 3 meters. What is its speed at the bottom of the ramp, assuming it starts from rest? (Use g = 10 m/s²)

A √15 m/s
B √30 m/s
C √60 m/s
D √120 m/s

✓ Correct Answer: Option C

By conservation of mechanical energy, potential energy (mgh) converts to kinetic energy (0.5mv²). Thus, v = √(2gh) = √(2 * 10 m/s² * 3 m) = √60 m/s.

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