A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 880 N on him. The mass of the losing player plus equipment is 86 kg, and he is accelerating at 2.6 m/s2 backward. f = 880 Nm1 = 86 kgm2 = 118 kga = 2.6 m/s2 What is the magnitude of the force in friction, in newtons, between the losing players feet and the grass as he slides backwards?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.