Which refers to the rate of change in velocity? speed
O acceleration
O direction
O magnitude

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?

An atom that has gained or lost electrons is called an _

Which symbol in the first law of thermodynamics represents the sum of the chemical and thermal energy stored in atoms and molecules? a. q b.w c.v d.u