A receiver in a football game is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of 4.2 m/s, grabs him. The tackler holds onto the receiver, and the two move off together with a velocity of 3 m/s. The mass of the tackler is 100 kg. Assuming that momentum is conserved, find the mass of the receiver.
A receiver in a football game is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of 4.2 m/s, grabs him. The tackler holds onto the receiver, and the two move off together with a velocity of 3 m/s. The mass of the tackler is 100 kg. Assuming that momentum is conserved, find the mass of the receiver.
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