To determine which vehicles are safely obeying the speed limit of 55 mph, we need to calculate the speed of each vehicle using the formula:
\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \]
Let's calculate the speed for each vehicle:
-
Ambulance:
- Distance: 150 miles
- Time: 2 hours \[ \text{Speed} = \frac{150 \text{ miles}}{2 \text{ hours}} = 75 \text{ mph} \]
-
Sports Car:
- Distance: 216 miles
- Time: 4 hours \[ \text{Speed} = \frac{216 \text{ miles}}{4 \text{ hours}} = 54 \text{ mph} \]
-
Train:
- Distance: 182 miles
- Time: 2 hours \[ \text{Speed} = \frac{182 \text{ miles}}{2 \text{ hours}} = 91 \text{ mph} \]
-
Limousine:
- Distance: 318 miles
- Time: 6 hours \[ \text{Speed} = \frac{318 \text{ miles}}{6 \text{ hours}} = 53 \text{ mph} \]
-
School Bus:
- Distance: 162 miles
- Time: 3 hours \[ \text{Speed} = \frac{162 \text{ miles}}{3 \text{ hours}} = 54 \text{ mph} \]
Now we can check which vehicles are obeying the speed limit (55 mph):
- Ambulance: 75 mph (not obeying)
- Sports Car: 54 mph (obeying)
- Train: 91 mph (not obeying)
- Limousine: 53 mph (obeying)
- School Bus: 54 mph (obeying)
The vehicles that are safely obeying the speed limit of 55 mph are:
- Sports Car
- Limousine
- School Bus
So the final answers are:
- A sports car travels 216 miles in 4 hours.
- A limousine travels 318 miles in 6 hours.
- A school bus travels 162 miles in 3 hours.