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Kinetic energy (KE) formula:
KE = 1/2 m v²
KE at 50 km/h
KE = 1/2 m (50²) = 1/2 m × 2500
KE at 100 km/h
KE = 1/2 m (100²) = 1/2 m × 10000
Compare
KE / KE = 10000 / 2500 = 4
So, at 100 km/h the car has 4 times as much kinetic energy as at 50 km/h.
Answer: The car has 3 times more kinetic energy at 100 km/h compared to 50 km/h (i.e., 4 times total).
Added 177 days ago|9/9/2025 6:57:39 AM
This answer has been confirmed as correct and helpful.
