A practice football dummy with a mass of 12kg is sliding across the field when a player applies a force of 30N, causing the dummy to accelerate. The coefficients of friction are s=0.4 and k=0.3.

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

i believe the answer is electric potential.

explanation:

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.