Final answer:
The question refers to a truck's tailgate and a ramp with an incline of 11 degrees, which implies a need for understanding physics concepts related to inclined planes. However, there is no specific question provided, and more information is needed to assist the student.
Step-by-step explanation:
The tailgate of a truck is 2 feet above the ground. The incline of a ramp used for loading the truck is 11°. The nature of the question suggests it requires understanding of physics principles related to forces acting on an inclined plane, particularly the calculation of components of gravitational force and friction. However, there is no specific physics calculation question present. The student may be attempting to find the length of the ramp or the force needed to move an object up the ramp, but they will need to provide more details.
In the case of the problems provided for reference, they pertain to the topics of gravitational potential energy, coefficients of friction, and acceleration in various scenarios involving inclined planes and the forces acting on objects on these planes. For example, problem 55 requires the use of the angle of incline and coefficient of friction to calculate acceleration and find the angle for which there would be no acceleration (constant velocity).