关于本计算器
Kinetic energy E = ½mv² from mass in kg/g and speed in m/s or km/h.
由质量速度求动能。
Kinetic energy E = ½mv² from mass in kg/g and speed in m/s or km/h.
Half the mass times speed squared; speed matters quadratically.
Energy quadruples — why braking distances grow so fast.
SI kilograms and m/s give joules; grams and km/h convert automatically.