Gravitational potential energy and kinetic energy — practice question

A small car is moving through a town. What would be a sensible estimate for the car’s kinetic energy?

• A$5 \times 10^4\,\text{J}$
• B$5 \times 10^7\,\text{J}$
• C$5 \times 10^{10}\,\text{J}$
• D$5 \times 10^{13}\,\text{J}$