What is the meaning for the word acid

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Which is the most accurate name for the ionic compound cas?