Atrain travels 120 km in 2 hours and 30 minutes. what is its average speed?

The average speed of the train is 48 km/hr

Explanation:

The term average speed refers to how fast a body is covering a distance. it is the rate at which a body covers a distance with time. Cars, Humans, and animals are among bodies that can attain speed. speed is measure in m/s.

speed of an object can be obtained using the equation below;

Speed =  ....................................1

from the question we are provided with;

Distance = 120 km

Time = 2 hours 30 minutes

Speed =?

The time can not operate with two units, so we have to convert 30 minutes to hours;

60 mins = 1 hr

30 mins = x hrs

x =  

x = 0.5 hours

now our time will be 2 hrs + 0.5 hr = 2.5 hrs

Substituting our values in equation 1 we have;

Speed =

Speed = 48 km/hr

Therefore, the average speed of the train is 48 km/hr

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000