Answer:
55 m/s
Step-by-step explanation:
If all kinetic energy is converted to heat:
½ mv² = mCΔT
v = √(2CΔT)
v = √(2 × 128 J/kg/K × (36.9°C − 25°C))
v = 55.2 m/s
Rounded to two significant figures, the speed is 55 m/s.
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