What is kinematics explain !!

someone please report my recently asked question !!!
aur wahaan k logo ko baat krni hai toh most welcome at this question -_-
...xD​

With these questions , 15 pts & brainliest

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)