Used Block

How far does the block slide on a horizontal surface after sliding down a frictionless ramp?

A 12 kg block is sliding down a frictionless ramp and moving at a speed of 6 m/s when it is 7 m above the ground. When it reaches the ground it slides along a horizontal surface. The coefficient of friction between the block and the urface is 0.2 How far does the block slide along the horizontal surface before coming to rest?

Public Comments

1. V at the bottom of the ramp Vb² = Vt² + 2gh = 173.2 m²/s² a on horizontal surface; a = µ*g = .2*9.8 = 1.96 m/s² X = Vb²/(2a) = 173.2/(2*1.96) = 44.18 m