Question

An airplane flies from its headquarters at night to a city 510 miles away

a) With a constant speed of 60 mph
b) With a constant speed of 70 mph
c) With a constant speed of 80 mph
d) With a constant speed of 90 mph

Answer 1

The time it takes for an airplane to fly to a city 510 miles away varies depending on its speed. At speeds of 60 mph, 70 mph, 80 mph, and 90 mph, it would take approximately 8.5 hours, 7.29 hours, 6.375 hours, and 5.67 hours, respectively.

Step-by-step explanation:

To calculate the time it takes for an airplane to fly a certain distance, we can use the formula time = distance / speed. Using this formula, we can find the time it takes for the airplane to fly to the city at different speeds:

1. At a speed of 60 mph, the time would be 510 miles / 60 mph = 8.5 hours.
2. At a speed of 70 mph, the time would be 510 miles / 70 mph = 7.29 hours.
3. At a speed of 80 mph, the time would be 510 miles / 80 mph = 6.375 hours.
4. At a speed of 90 mph, the time would be 510 miles / 90 mph = 5.67 hours.

Therefore, the time it takes for the airplane to fly to the city at different speeds are: 8.5 hours, 7.29 hours, 6.375 hours, and 5.67 hours, respectively.