Two identical-looking, large, round balls are placed in front of you. one is filled with feathers and the other is filled with sand. wothout lifting the balls, how could you use newton's first law to distinguish between them?

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

How does the entropy of steam compare to the entropy of ice?

Which statements did both aristotle and ptolemy assume? check all that apply.