Question

A heron can travel an average of 400 km in 10h. What is the rate of change of distance?

Answer 1

Answer:

40 km/h

Step-by-step explanation:

rate of change of distance = speed

speed = distance/time

speed = (400 km)/(10 h)

speed = 40 km/h

Answer 2

Rate of change of distance is also known as speed.

Given,

Distance (s) = 400km = 400 × 1000m = 400,000m

Time (t) = 10h = 10 × 3600s = 36,000s

We know that,

Speed (v) = Distance/Time

$=> v = \frac{s}{t} \\ => v = \frac{400000m}{36000s} \\ => v = \frac{400m}{36s} \\ => v = \frac{100m}{9s} \\ => v = \frac{100}{9}m {s}^{ - 2}$