A 115 kg fullback is running at 4.8 m/s to the east and is stopped in 0.75 s by

Question

A 115 kg fullback is running at 4.8 m/s to the east and is stopped in 0.75 s by a head-on tackle by a tackler running due west.

(a) Calculate the original momentum of the fullback.
Magnitude
____________kg·m/s

Direction________



(b) Calculate the impulse exerted on the fullback.
Magnitude
__________kg·m/s

Direction_________



(c) Calculate the impulse exerted on the tackler.
Magnitude
____________kg·m/s

Direction___________



(d) Calculate the average force exerted on the tackler.
Magnitude
___________N

Direction_______

Explanation / Answer

a) 115 x 4.8 = 552 kg ms^-1 b) Impulse = change in momentum (final momentum - initial) (115x0)-(115x4.8) = -552 Ns (newton seconds) c) +552 Ns d) F x t = 552 F = 552 / 0.75 = 736 N let me know if you have any doubt

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