Answer :
Final answer:
The original momentum of the 84-kg fullback running at 3.8 m/s to the east is calculated by multiplying the mass by the velocity, resulting in a momentum of 319.2 kg m/s to the east.
Explanation:
To calculate the original momentum of the 84 kg fullback running at 3.8 m/s to the east, we can apply the formula for momentum which is momentum (p) equals mass (m) times velocity (v). The player's momentum before the tackle can be calculated as such: p = m * v = 84 kg * 3.8 m/s = 319.2 kg m/s. This is an eastward momentum. Remember, direction is significant in momentum as it is a vector quantity. Therefore, the original momentum of the fullback is 319.2 kg m/s to the east.
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