Question

13) A block of mass 2.0 Ag is pushed 2.5 m along a frictionless horizontal table by a constant 1o N force directed 28° above the horizontal. The work done on the block by the applied force is. A) 25.0J B) 11.7J C22.0J D) zero What is the total 14) A 0.5 Ag particle has a speed of 4.0 m/s at point A and 6.0 m/s at point B. work done on the particle as it moves from A to B? A) 9.0J B)5.0J C)4.0J D) 2.0 15) Three blocks are connected as shown. The ropes and pulleys are of negligible mass. When released, block C moves downward, block B moves up the ramp, and block A moves to the right After each block has moved a distance d, the force of gravity has done A) positive work on A, B, and C B) zero work on A, positive work on B, and negative work on C C) zero work on A, negative work on B, and positive work on C D) negative work on A, B, and C 36.9 16) An object is initially at rest. A net force points in the same direction of the velocity is applied to the object so that the power of the net force is constant. As the object gains speed, A) the magnitude of the net force remains constant B) the magnitude of the net force increases C) the magnitude of the net force decreases D) not enough information given to decide 5 19

Answer 1

2 OK Y.GaN 4.69 = 19.62-4.69 N ne work done the displace ment is on by alt other forces is zero S