8. What is the momentum of a 120-kg professional fullback running
across the line at 11.2 m/s?

134r kgm^-1 or 1344 kg /m

Explanation:

Momentum is is given by:

p=mv

Where:

p is momentum, m is mass in kg and v is velocity in ms−1

p=120kg×11.2 m/ s= 1344 kgms=1344kgm^−1

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers