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Quiz #4 SOLUTIONS

# Quiz #4 SOLUTIONS - NYA Quiz#4 Nov.6'h,2oo8 Instructions o...

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NYA Quiz #4 Nov. 6'h,2oo8 Instructions: o Write your answers on this sheet. o Be careful with significant figures. Multiple Choice Ouestions (3 pts each) 1. An astronaut floats in a space station that is orbiting the earth. Which statement(s) MUST be true? .,|\ (9f Her mass and her weight are non-zero. b. Her mass and her apparent (effective) weight are zero. c. Her mass and her apparent (effective) weight are non-zero. d. Her weight and her apparent (effective) weight are zero 2. A woman pulls on a 6.00-kg crate, which in turn is connected to a 4.00-kg crateby a light rope. The light rope remains taut. If ihe two crates ere accelerating to the right, a. the.6.00-kg crate exerts more force on the 4.00-kg crate than the 4.00-kg crate exerts on the 6.00-kg crate. b. the 6.00-kg crate exerts less forceon the 4.00-kg crate than the 4.00-kg crate exerts on the6.00-ks crate. -A f, the 6.00-kg crate exerts as much force on the 4.00-kg crate as the 4.00-kg crate exerts on the 6.00-kg crate. 3. Compared to a gear tooth on the rear sprocket (on the left, of small radius) of a bicycle, a gear tooth on thefront sprocket (on the right, of large radius) has a. the samelinear speed and a faster angular speed. a faster linear speed and a faster angular speed. the same linear speed and a slower angular speed. a slower linear speed and the sameangular speed. NAME: 6.00 kg _ffi_ _H* b. o d. 4. You arestanding at rest and begin to walk (i) theforce ofthe ground on yourfeer v b. the force ofvour acceleration c. theforce ofyourvelocity d. the force of your momentum e. the force of your feet on the ground A DVD is rotating with an ever-increasing speed. How do the centripetal acceleration aru6rnd tangential acceleration dta, compare at points p and e?

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