problem05_76

University Physics with Modern Physics with Mastering Physics (11th Edition)

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5.76: To answer the question, 0 v must be found and compared with hr). km (72 s m 20 The kinematics relationship 2 0 2 v ax - = is useful, but we also need a . The acceleration must be large enough to cause the box to begin sliding, and so we must use the force of static friction in Newton’s Second Law:
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Unformatted text preview: . or , s s g a ma mg -= -Then, , ) ( 2 2 s v x g -=-or . m) 47 )( s m 8 . 9 )( 30 (. 2 2 2 s = = gx v Hence, , h km 60 s m 6 . 16 = = v which is less than 72 km/h, so do you not go to jail....
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