Question

a large boulder is ejected vertically upward from a volcano with an initial speed of 40.6 m/s. air resistance may be ignored.
what is the magnitude of the acceleration while the boulder is moving?
express your answer in meters per second squared.
$a =$ ______ $\text{m/s}^2$
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part f
what is the direction of the acceleration while the boulder is moving?
○ up
○ down
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Explanation:

Step1: Identify acting acceleration

When air resistance is ignored, the only acceleration acting on the boulder is the acceleration due to Earth's gravity, which has a standard magnitude of $9.81\ \text{m/s}^2$.

Step2: Determine acceleration direction

Gravitational acceleration always acts toward the center of the Earth, which is downward relative to the boulder's motion.

Answer:

Magnitude of acceleration: $9.81\ \text{m/s}^2$
Direction of acceleration: down