A 4.0-kg block starts from rest and slides 5.0 m down a plane inclined at 60^o to the horizontal. The coefficient of kinetic friction between the surface and the block is 0.20. The speed of the block after it slides 5.0 m is: A) 2.2 m/s B) 3.1 m/s C) 0 m/s D) 7.7 m/s E) 6.3 m/s

Question

Quizplus · Accepted Answer

The gravitational force component along the incline is greater than the frictional force, causing the block to accelerate. Using energy conservation or kinematics, the speed after 5.0 m is approximately 6.3 m/s.

A 40-Kg Block Starts from Rest and Slides 5