A boulder starting from rest rolls down a hill in a straight line, which we shall call the xx axis. A graph of its position xx as a function of time tt is shown in the figure. (Figure attached)   1) Find the distance the boulder rolled between the end of the first second and the end of the third second. Express your answer in meters to one significant figure.   2) Find the boulder’s average speed during the first second. Express your answer in meters per second to one significant figure.

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Displacement, Velocity and Acceleration

In classical mechanics, kinematics deals with the motion of a particle. It deals only with the position, velocity, acceleration, and displacement of a particle. It has no concern about the source of motion.

Linear Displacement

The term "displacement" refers to when something shifts away from its original "location," and "linear" refers to a straight line. As a result, “Linear Displacement” can be described as the movement of an object in a straight line along a single axis, for example, from side to side or up and down. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Non-contact sensors such as LVDTs and other linear location sensors can calculate linear displacement. Linear displacement is usually measured in millimeters or inches and may be positive or negative.