Abox slides across a frictionless floor with an initial speed v = 3.6 m/s. it encounters a rough region where the coefficient of friction is µk = 0.7. a) what is the shortest length of rough floor which will stop the box? x = 0.9436 m * 0.9436 ok : apply the work-energy theorem. : according to the work-energy theorem, the net change in kinetic energy of the box is equal to the work done on the box by the external forces. what are those forces? which ones do work? relate the work to the distance over which the forces act. b) if instead the strip is only 0.56 m long, with what speed does the box leave the strip?

2.22/3.33 points | previous answers tamucolphysmechl1 4.pre.002. ask your teacher my notes question part points submissions used on a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 2.40 m/s. (a) what are the magnitude and direction of the velocity of the red glider after the collision? magnitude 3.33 m/s correct: your answer is correct. direction correct: your answer is correct. (b) is this collision elastic?

Distinguish between linear momentum and angular momentum

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.