4 R IN webassign.net + 189 W 2130 homework 11 (fall/winter) 2130 homework 11 (fall/winter) - PHY 2130, section F22, Fall 2022 | WebAssign A hand pushes a 1 kg block along a table from point A to point C as shown in the figure below. The table has been prepared so that the left half of the table (from A to B) is frictionless. The right half (from B to C) has a non-zero coefficient of friction equal to . The hand pushes the block the full distance from A to C using a constant force of 5 N. The block starts off at rest at point A and comes to a stop when it reaches point C. The distance from A to B is 0.5 m and the distance from B to C is also 0.5 m. We will consider the block by itself as our system so all forces on the block are external. Initial position Final position of block of block M P no friction friction A B C 1/2 m -1/2 m A. From A to B: The work done by the weight force is negative The work done by the normal force is ( negative O X The work done by the pushing force is positive The change in kinetic energy of the block is positive B. From B to C: The work done by the weight force is negative O X The work done by the normal force is negative O X The work done by the pushing force is positive O V The work done by the friction force is negative The change in kinetic energy of the block is negative O X The magnitude (absolute value) of the work done by the friction force is greater than @