Which graph shows the correct relationship between kinetic energy and speed?

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

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?