What science is/is not and how physics and chemistry are connected

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

What happens when a rubber rod is rubbed with a piece of fur?