Determin the kinetic energy of 1000-kg roller coaster car that is moving with the speed of 20.o m/s what if the speed was moving twice the speed

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

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?