During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a velocity of + 4.2 m/s, grabs and holds onto him so that they move off together with a velocity of + 2.3 m/s. If the mass of the tackler is 125 kg, determine the mass of the receiver in kilograms. Assume momentum is conserved.

Question

Marlee Heath

Physics

1 June, 09:50

During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a velocity of + 4.2 m/s, grabs and holds onto him so that they move off together with a velocity of + 2.3 m/s. If the mass of the tackler is 125 kg, determine the mass of the receiver in kilograms. Assume momentum is conserved.

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Answers (1)

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Roy Henson · Answer 1

Answer:103.261kg

Explanation:

Assume m to be mass of the receiver

Momentum before = (125*4.2) - m*0

Momentum after = 2.3 (125+m)

525=287.5+2.3m

m=237.5/3.3

m=103.261kg