You and a friend are throwing a ball back and forth to each other. What must be true about the ball in order for its momentum to change?(1 point)
Responses
All forces on it must be in the same direction.
All forces on it must be in the same direction.
An unbalanced force must be acting on it.
An unbalanced force must be acting on it.
All forces on it must have equal strength.
All forces on it must have equal strength.
No forces at all must be acting on it.
No forces at all must be acting on it.
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1 answer
The correct response is:
An unbalanced force must be acting on it.
For the momentum of the ball to change, there needs to be a net force acting on it, which implies that the forces are not balanced. This unbalanced force can come from your friend throwing the ball, gravity, or other factors affecting its motion.
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