<span>Thermal energy added means that heat is added to the system to allow the reaction to occur. Processes that undergo this type of reaction are freezing, deposition and sublimation. Thermal energy removed means that heat is released from the system to the surroundings to allow for the reaction to occur. Processes that undergo this type of reaction are condensation, evaporation and melting</span>
B. kinetic energy increases and potential energy decreases
Answer:
712.5 kg m/s
Explanation:
Work out the total momentum before the event (before the collision):
p = m × v
Massof Deon = 95kg
Velocity =7.5m/s
Mass of Chuck = 120kg
Velocity = 0m/s
Momentum of Deon before = 95 × 7.5 = 712.5 kg m/s
Momentum of Chuck before = 120 × 0 = 0 kg m/s
Total momentum before = 712.5+ 0 = 712.5 kg m/s
Working out the total momentum after the event (after the collision):
Because momentum is conserved, total momentum afterwards = 712.5 kg m/s
