Jessica's weight is 540 Newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540N, then Jessica pulls on the Earth with a force of 540 Newtons that acts in the opposite direction. However, if Jessica stumbles while rollerblading, she wil lfall down to the ground. Explain why this happens

1 answer

When she stumbles, the forces are still there, they don't go away. She accelerates to the ground (F=ma) as the Earth accelerates toward her (F=Me*a)
Such is life.