What is the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s?

What is hidden during a lunar eclipse? isn't the moon hidden?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.