Diamond Whitaker

Mathematics

13 October, 10:00

Steven carefully places a 1.25-kg wooden block on a frictionless ramp, so that the block begins to slide down the ramp from rest. The ramp makes an angle of 55.3° up from the horizontal. Which forces below do non-zero work on the block as it slides down the ramp? How much total work has been done on the block after it slides down along the ramp a distance of 1.81 m? Nancy measures the speed of the wooden block after it has gone the 1.81 m down the ramp. Predict what speed she should measure. Now, Steven again places the wooden block back at the top of the ramp, but this time he jokingly gives the block a big push before it slides down the ramp. If the block/'s initial speed is 2.00 m/s and the block again slides down the ramp 1.81 m, what should Nancy measure for the speed of the block this time?