Question

A 640 N hunter gets a rope around a 3200 N polar bear. They are stationary, 50 m apart, on frictionless level ice. When the hunter pulls the polar bear toward him, the hunter will 1. move: 42 m A) 25 m в) C) 12 m D) 8.3 m E) 4.6 m 2. The force on a particle is given by F) 0.51+1.5, in N. If the force acts from /-1.5 to -2.5 s, the impulse acting on the particle is: 3.0 kg m/s 4.6 kg m/s 4.8 kg m/s 7.1 kg m/s 4.3 kg m/s A) В) D) E) A rotating wheel has an initial angular speed of 18 rad/s but is slowing down at a rate of 1.0 rad/s. By the time it stops it will have turned through: 81 rad 160 rad 245 rad A) B) C) D) E) 330 rad 410 rad A disk starts from rest and rotates around a fixed axis, subject to a constant net torque. The work done by the torque during the time interval t-4 to t 8 s is work done during the time interval t 0 to t 4 s as the the same A) half as much twice as much three times as much four times as much C) E) Page 1 28060

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Answer 1

Сот I som HE GYON AB 3200N Distance moved by the hunter. хоm = м х + + mitm₂ (640) (o) + 3200 (so) 64043206 ~ 142 ml

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