A stone is thrown vertically upward. At the top of its vertical path its acceleration is A. zero. B. 10 m/s2. C. somewhat less than 10 m/s2. D. undetermined.

When the stone reaches the top of its vertical path, its velocity momentarily becomes zero, but its acceleration remains constant at 10 m/s² due to Earth's gravity acting downward.

B. 10 m/s²

This constant downward acceleration is what causes the stone to eventually fall back down to the ground.

at the top of its vertical path the acceleration of the stone is zero since it has reached its maximum height and is momentarily at rest before beginning to fall back down.

However, the acceleration due to gravity is [tex]10 m/s^2[/tex] throughout the stone's entire trajectory.

B. 10 m/s² is correct.

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When a stone is thrown vertically upward, it initially experiences an upward acceleration due to the force applied by the person throwing it. This acceleration gradually decreases as the stone moves higher due to the force of gravity acting in the opposite direction.

At the highest point of the stone's path, it reaches a state of equilibrium where its velocity becomes zero and its acceleration is also zero.

Therefore, the correct answer to the question is A. zero. At the top of the stone's path, there is no net force acting on it, and therefore its acceleration is zero. It is important to note that the stone's velocity is still changing at this point, as it will begin to accelerate downward due to the force of gravity once it reaches its highest point.
In general, the acceleration of a vertically thrown object can be calculated using the formula a = -g, where g is the acceleration due to gravity (approximately 10 m/s2). However, this acceleration decreases as the object moves higher, and becomes zero at the highest point.

In conclusion, when a stone is thrown vertically upward, its acceleration at the top of its path is zero, as there is no net force acting on it. The stone will then begin to accelerate downward due to the force of gravity, with an acceleration of approximately 10 m/s2.

When a stone is thrown vertically upward, it experiences a force due to gravity, which causes it to decelerate as it rises. At the top of its vertical path, the stone momentarily comes to a stop before it starts falling back down. It's important to note that while its velocity is zero at this point, its acceleration is not.
The acceleration of the stone is determined by the force of gravity acting on it, which is constant throughout its upward and downward journey. On Earth, the acceleration due to gravity is approximately 9.81 m/s² (rounded to 10 m/s² for simplicity).
So, the correct answer is B.

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