Question

if that same hockey puck is stopped by a players hockey stick, what can be * 1 point said about the puck at the moment it slows down?
forces on the puck are balanced which causes it to slow down
forces on the puck are unbalanced which causes it to slow down
there are no forces acting on the puck at the moment it slows down

Explanation:

Según la segunda ley de Newton, un objeto cambia su estado de movimiento (en este caso, se ralentiza) cuando actúan fuerzas desequilibradas sobre él. Cuando el palo de hockey detiene el disco, aplica una fuerza que desequilibra las fuerzas que actuaban sobre el disco previamente.

Answer:

Forces on the puck are unbalanced which causes it to slow down