Can you tell from an FBD if an object is moving or not? Explain your response.

Yes it is possible to tell if an object is moving or not using a FBD based on Newton's Laws of Motion

Explanation:

A Free Body Diagram is the representation of an object in a diagram that shows (all) the vector of the forces that act on the object

When the sum of all the force vectors acting on the body give a resultant force the object will move in the direction of the force according to Newton's First Law of motion, which states that an object will continue in its rest state or   continue its uniform motion on a straight path unless a force acts on the object

The net force, 'F', can be represented according to Newton's Second Law of motion which is F = m·a, where 'a' represents the acceleration (rate of change in velocity) of the object as the object begins to move from rest

Therefore;

From a FBD it is possible to tell if an object is moving or not.

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

i think the answer is tomato juice? not entirely sure though