A uniform narrow bar, resting on frictionless ice, is given a transverse horizontal impulse J at one end as shown. The center of mass of the bar COM will then: COM O move in a circle O remain at rest O move along some other curve O move in a parabola O move in a straight line

Consider an automobile accident in which a 1000 kg car strikes a tree in an inelastic collision.  The speed of  the car just before the collision was 72 km/hr.  The duration of the impulse is 0.01s.  What force does the passenger experience? In the same automobile, a passenger of mass 50 kg is sitting, unrestrained, in the front seat.  The speed of the passenger was 72 km/hr before the collision and zero afterewards.  The duration of the impulse that changes is or her momentum is again 0.01 s.  What force does the passenger experience? Same automobile accident, except that the passenger is restrained by a seat belt and an air bag explodes at the moment of impact.  The passenger's speed still changes from 72 km/hr to zero, but the air bag slows the time during which this change occurs to 0.01 s.   What force does the passenger experience?

A 2 kg object is moving to the right with a velocity 21 m/s when it experiences an impulse of -31 kg m/s. What is the object's velocity vector after the impulse. O 71 m/s 0 31 m/s O (0.5i) m/s 00 O-0.51 m/s

irai, a 50 kg figure skater, lands on the ice her feet after landing the triple axel and immediately jumps up again to perform a double toe-loop. The instant before her skates first touch the ice after the triple axel, her vertical velocity is 3 m/s downward. Her velocity is 2 m/s upward when her skates leave the ice for the second jump, 0.8 s later. (a) What is the vertical impulse exerted on Mirai during the 0.8 s she is in contact with the ice between the two jumps? (b) What is the average net vertical force exerted on Mirai during this 0.8 s? (c) What is the average reaction force exerted upward by the ice on Mirai during the 0.8 s?