A block on a frictionless surface starts at a height of 2 meters above the floor and slides down a ramp 6 meters long. What is the velocity of the block when it is 1.5 meters above floor level?

a) 5.4 m/s

b) 3.1 m/s

c) 6.3 m/s

d) 2.0 m/s

e) 3.27 m/s

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