Here is Sections 3 and 4 of Newton's Laws.

1. Section 3&4 Newton’s Laws of Motion I. Law of Inertia II. F=ma III. Action-Reaction

13. Newtons’s 1 st Law and You Don’t let this be you. Wear seat belts. Because of inertia, objects (including you) resist changes in their motion. When the car going 80 km/hour is stopped by the brick wall, your body keeps moving at 80 km/hour.

14. 2 nd Law F = m x a

18. If mass remains constant, doubling the acceleration, doubles the force. If force remains constant, doubling the mass, halves the acceleration.

28. 3 rd Law Flying gracefully through the air, birds depend on Newton’s third law of motion. As the birds push down on the air with their wings, the air pushes their wings up and gives them lift.

33. 3 rd Law The reaction of a rocket is an application of the third law of motion. Various fuels are burned in the engine, producing hot gases. The hot gases push against the inside tube of the rocket and escape out the bottom of the tube. As the gases move downward, the rocket moves in the opposite direction.

35. momentum Higher mass higher momentum Higher velocity higher momentum Momentum = mass x velocity p = m • v

36. momentum includes velocity. So, it has direction. Momentum points in the direction of motion.

37. Conservation of momentum When objects collide, all of the momentum goes somewhere.

38. Conservation of momentum When Two moving objects collide, all of the momentum goes somewhere.

39. Conservation of momentum When a moving object collides a fixed one, all of the momentum goes from blue one to the red one.

40. Conservation of momentum When an object of twice mass of the other one, it collides a smaller one, all of the momentum goes from the red ball to blue ball.