Determine the mechanical energy of this object: 1-kg ball rolls on the ground at 2 m/s a. the ball is on the ground, so the mechanical energy is zero b. 2 j c. 1 j d. 4 j

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.