Please help and explain pls

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Energy flows from the producer level to the level. is called