Definitions

Question 1

Newton’s 1st Law

Answer 1

The velocity of an object will only change if resultant force acts on it

Question 2

Newton’s 2nd Law

Answer 2

Resultant F (on object) proportional to rate of change of momentum

Question 3

Newton’s 3rd Law

Answer 3

If object A exerts a force on object B, object B exerts a force on object A that is the same size, type, but acts in opposite directions along the same line (& acts on diff objects)

Question 4

Elastic collision

Answer 4

Total kinetic energy is same

Question 5

Impulse (eq)

Answer 5

F size x time it acts for

Question 6

Photon model (of light)

Answer 6

electromagnetic radiation treated as discrete quanta with energy E = hf = hc/lambda

Question 7

Photoelectric effect

Answer 7

Emission of electrons (photoelectrons) from metal surface when electromagnetic radiation (light) above certain f incident
[PHOTO]

Question 8

Photoelectric effect

Answer 8

Emission of electrons (photoelectrons) from metal surface when electromagnetic radiation (light) above certain f incident
[PHOTO]