Decreasing the trains velocity will the kinetic energy.

Decrease or Increase

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

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?