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300km in 3 hours = 100km per hour
Velocity or speed. It means the car travels an average of 100km every hour. It equates to 62.14 miles per hour.
KE = 1/2 mass *velocity squared A direct relationship. More mass, and a truck has more mass, and the more kinetic energy if velocities are held equal.
54 minutes
1 km = 0.6214 miles so 100kmh = 62.14 km per hour.