Understanding the Concepts

* Acceleration: The rate at which an object's velocity changes over time.

* Initial Velocity (vi): The starting velocity of the object (7 ms in this case).

* Final Velocity (vf): The velocity the object reaches after a certain time (54 ms in this case).

* Time (t): The duration over which the acceleration occurs (30 s in this case).

Formula

The formula for acceleration is:

acceleration (a) = (vf - vi) / t

Calculations

1. Convert units: Make sure all units are consistent. Since time is in seconds, we need to convert the velocities to meters per second (m/s). I'm assuming "ms" means "milliseconds," so we'll convert them to seconds:

* 7 ms = 0.007 s

* 54 ms = 0.054 s

2. Plug in the values:

* a = (0.054 m/s - 0.007 m/s) / 30 s

3. Solve for acceleration:

* a = (0.047 m/s) / 30 s

* a = 0.00157 m/s²

Answer

The acceleration of the object is approximately 0.00157 m/s².