A 3.0-kg box is sliding down a frictionless ramp. At the bottom
of the ramp it has a speed of 6.5 m/s. It then slides across a
horizontal, rough surface where the coefficient of kinetic friction
for the box sliding on it is 0.45. What is the speed of the block
after it has traveled 1.5 m along the rough surface?
A :
4.4 m/s
B :
2.7 m/s
C :
3.3 m/s
D :
5.4 m/s
E :
6.3 m/s