9 An acorn falls from a tree As it falls compare its kinetic energy E to its potential energy E a E increases and E increases b

Question

9 An acorn falls from a tree As it falls compare its kinetic energy E to its potential energy E a E increases and E increases b Ex increases and decreases C Ex decreases and decreases d E decreases and E increases C 10 A person is standing on a bathroom scale while riding in an elevator The elevator is moving up at consta speed What is the value of the normal force on the person d greater than mg a b exactly mg C less than mg d cannot be determined without knowing the speed 11 Consider two masses m and m at the top of two frictionless inclined planes Both masses start from rest at the same height However the plane on which m1 sits is at an angle of 30 with the horizontal while the plane on which m2 sits is at 60 If the masses are released which is going faster at the bottom of its plane a m1 b m2 c They both are going the same speed d cannot be determined without knowing the masses 12 If no outside net force acts on a moving object EF 0 the moving object will a stop immediately b move with constant velocity C go faster and faster d slow down and eventually come to a stop 3 Compared to its mass on the Earth the mass of an object on the Moon is a the same b more M C half as much d less 30 A person with a weight of 700 N stands on a bathroom scale that is on an inclined ramp If the s Hewtons it will show a 700 N b ON more than 700 N less than 700 M

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