The kangaroo stops at a lake for a drink of water and then starts hopping again to the south. Each second, the kangaroo’s velocity increases 2.5 m/s. What is the kangaroo’s acceleration (in meters per seconds squared) after 5 s? Only numerical entry required as question indicated units.

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.