EVERYDAY SCIENCE

Detailed explanation-1: -Because motion is a relative term; it appears differently when viewed from different reference frames. Because motion is always described in Earth’s frame of reference; if another frame is used, it has to be specified with each situation.

Detailed explanation-2: -The different observations occur because the two observers are in different frames of reference. A frame of reference is a set of coordinates that can be used to determine positions and velocities of objects in that frame; different frames of reference move relative to one another.

Detailed explanation-3: -Steps for Describing Motion in Different Reference Frames: Step 1: Determine the stationary frame of reference. Step 2: Determine the velocity of the moving frame of reference with respect to the stationary reference frame. Step 3: Identify which frame of reference the object’s velocity is given in.

Detailed explanation-4: -A “frame of reference” is a standard relative to which motion and rest may be measured; any set of points or objects that are at rest relative to one another enables us, in principle, to describe the relative motions of bodies.

Detailed explanation-5: -Frame of reference refers to something that is not moving with respect to an observer that can be used to detect motion. For the children on the bus, if they use other children riding the bus as their frame of reference, they do not appear to be moving.