How do you know if an object is not accelerating?

A body at rest is not acceleratiing,  

as well as a body moving at constant velocity.  

Only when a force is applied to either change it's direction, slow it down, or speed it up, is that body said to be accelerating.

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

answer: 45

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