An airplane flies for 1.25 hours with a constant speed of 1080 km/hr and then for another 2.5 hours with a constant speed of 984 km/hr. How far (what distance) did it go?

The airplane went 3810 km

Explanation:

The Distance at Constant Speed

The speed is defined as the rate of change of the distance:

The distance is calculated by solving for d:

d = vt

The airplane first flies at v=1080 Km/h for t=1.25 hours. The first distance is:

d1 = 1080 Km/h * 1.25 h = 1350 Km

Then it flies at v=984 Km/h for t=2.5 hours. The second distance is:

d2 = 984 Km/h * 2.5 h = 2460 Km

The total distance was 1350 + 2460 = 3810 km.

The airplane went 3810 km

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles