Question

Question

Which car has the greatest efficiency?(1 point)
Responses

a 1,200 kg car that travels 20 km per liter of fuel
a 1,200 kg car that travels 20 km per liter of fuel

a 900 kg car that travels 15 km per liter of fuel
a 900 kg car that travels 15 km per liter of fuel

a 900 kg car that travels 20 km per liter of fuel
a 900 kg car that travels 20 km per liter of fuel

a 1,200 kg car that travels 15 km per liter of fuel

Answer 1

To determine which car has the greatest efficiency, we can consider the fuel efficiency in terms of kilometers traveled per kilogram of vehicle mass.

1. 1,200 kg car that travels 20 km per liter of fuel: Efficiency = 20 km / 1,200 kg = 0.01667 km/kg

2. 900 kg car that travels 15 km per liter of fuel: Efficiency = 15 km / 900 kg = 0.01667 km/kg

3. 900 kg car that travels 20 km per liter of fuel: Efficiency = 20 km / 900 kg = 0.02222 km/kg

4. 1,200 kg car that travels 15 km per liter of fuel: Efficiency = 15 km / 1,200 kg = 0.0125 km/kg

Now, comparing the efficiencies:

• 1,200 kg car (20 km/L): 0.01667 km/kg
• 900 kg car (15 km/L): 0.01667 km/kg
• 900 kg car (20 km/L): 0.02222 km/kg
• 1,200 kg car (15 km/L): 0.0125 km/kg

The car with the greatest efficiency is the 900 kg car that travels 20 km per liter of fuel, with an efficiency of approximately 0.02222 km/kg.