m ie vertieely down i eeleraion is down the ramp When scr moves in a cirele wit
ID: 1778265 • Letter: M
Question
m ie vertieely down i eeleraion is down the ramp When scr moves in a cirele wit contant speed, its eeleration is e) enstant in magnitiuade and direetion none of th e) constantly d) constan i bead not in direetion ) is it peusibde fo a ytes to have negaive potential energy? No, beese this would have no physieal mesning b) No, becse the kinetie energy of a wy stem must egual its potential energy e Yes, sice the cholee of the sero of potential energy i di Yes, as long as the kinetie energy is positive, e) Yes, as kong as the total energy is positive A buket is being lowered on a rope at a comstant speed Ignoring any effects due to the air a) the tension of the rope is less than the weight of the bucket b) die sension or she rope is equal to the weight of tw bucket e) which is greater depends on how fast the bucket is going ) the tension of the rope is greater than the weight of the bucket. e) there is no connection Iwtween the tension of the rope and the weight of the bucket Short Answer (d points) ) While lee skating, an 6-kg woman runs into a 30-kg boy who is standing still on her ice skates a) Compare the magnitudes of the forces that they experience b) Which one, if either, experiences the larger aceleration? ExplainExplanation / Answer
1.
Thespeed of the ball becomes to zero when it reaches the top of the ramp(when it comes to rest position), but it has acceleration, it is pointed along it's direction of motion. This means that the acceleration is pointed up the ramp, hence option b is correct.
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