Answer:
a pitcher throwing a baseball
a car accelerating downhill
a toy rocket being launched into the air
Step-by-step explanation:
As per Newton's II law we know that when an object will have unbalanced force on it then it will become accelerated.
So here we know that
so in order to find the unbalanced force condition we will here find the condition of acceleration in the given all cases
a baseball resting on a table = Not accelerated so it is balanced force
a pitcher throwing a baseball = baseball is accelerated so it is unbalanced
a car stalling at a stoplight = car is at rest so no acceleration so it is balanced force
a car accelerating downhill = here its accelerating so it is unbalanced
a rubber duck floating in a bathtub = No acceleration so it is balanced force
a toy rocket being launched into the air = Accelerating so it is unbalanced