A particle with a mass of 1.55 kg is acted on by a force Fx acting in the x-direction. If the magnitude of the force varies in time as shown in the figure below, determine the following.

Incomplete.

To determine the following, we would need additional information and the figure mentioned in the question. Please provide more details or upload the figure so that I can assist you further.

To determine the following, we'll need to analyze the provided figure, which unfortunately cannot be seen in a text-based format. So, please describe or provide some information about the figure and the variations in the force magnitude over time.