A 25 kg mass moving with 25 m/s is brought to a complete stop with a constant deceleration over a period of 5 seconds by a brake system. The brake energy is absorbed by 0.5kg water initially at 100 kPa, 20°C. Assume that the mass is at constant P and T. Find the energy the brake removes from the mass assuming P = C?#

• A. 7.6125 kJ
• B. 7.7125 kJ
• C. 7.8125 kJ
• D. 7.9125 kJ