In trial #1 A force is applied to a box with a weight of 25 N to move it across a rough surface at a constant velocity. The object encounters 3 N of frictional force. Put your data (numbers) into the data table for Trial #1. Using Newton's Second Law (F = ma). solve for the mass of the box. Decide if the box is moving at constant velocity or accelerating. . Finally, solve for u In trial #2 A force is applied to a box with a weight of 25 N to accelerate = it across a rough surface. The same 25 N box is now pulled with increasing speed with an applied force of 5 N. The object encounters 3 N of frictional force. Put your data (numbers) into the data table for Trial #2. Using Newton's Second Law (F - ma). solve for the mass of the box. Decide if the box is moving at constant velocity or accelerating. Finally, solve for u Use the following information and your knowledge of Physics to complete the data table. Many answers can be found in the image. 10