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# HW 6 - lie(el7352 HW06 markert(56480 This print-out should...

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lie (el7352) – HW06 – markert – (56480) 1 This print-out should have 22 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points A rock of mass m is thrown horizontally off a building from a height h . The speed of the rock as it leaves the thrower’s hand at the edge of the building is v 0 as shown. v 0 h Δ x How much time does it take the rock to travel from the edge of the building to the ground? 1. t = radicalbig hv 0 2. t = 2 h g 3. t = hv 0 g 4. t = radicalBigg 2 h g 5. t = h v 0 002 (part 2 of 2) 10.0 points What is the kinetic energy of the rock just before it hits the ground? 1. K f = 1 2 mv 2 0 2. K f = mgh - 1 2 mv 2 0 3. K f = 1 2 mv 2 0 - mg h 4. K f = 1 2 mv 2 0 + mg h 5. K f = mgh 003 (part 1 of 4) 10.0 points A bead slides starting from rest at position O on a frictionless wire. The gravitation field is in the - y direction. x y V S Z O At which position(s) will the speed of the bead have a maximum value? 1. Points V and Z . 2. Point S . 3. Point V . 4. Point Z . 5. The bead remains stationary at point O . 004 (part 2 of 4) 10.0 points At which position(s) will the magnitude of the acceleration in the x direction of the bead have a maximum value? 1. Point V . 2. Point S . 3. Point O . 4. Point Z . 5. Points V and Z . 005 (part 3 of 4) 10.0 points At which position(s) will the speed of the bead have a minimum value?

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HW 6 - lie(el7352 HW06 markert(56480 This print-out should...

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