1. Understand the Concepts
* Initial Velocity (v₀): The object starts from rest, so its initial velocity is 0 m/s.
* Final Velocity (v): This is what we need to find.
* Acceleration due to Gravity (g): This is approximately 9.8 m/s² (downwards).
* Time (t): The time it takes to fall is 2 seconds.
2. Use the Relevant Equation
We can use the following kinematic equation to relate these variables:
* v = v₀ + at
3. Substitute Values and Solve
* v = 0 m/s + (9.8 m/s²)(2 s)
* v = 19.6 m/s
4. Change in Velocity
Since the initial velocity was 0 m/s, the change in velocity is simply the final velocity:
* Change in velocity = 19.6 m/s
Therefore, the change in velocity of the 10 gram object is 19.6 m/s.
Important Note: The mass of the object (10 grams) is irrelevant in this calculation because the acceleration due to gravity is the same for all objects, regardless of their mass.
