Uniform line movement.
We have that the data is:
Time (t) = 30 m = 0.5 h
Distance (d)= 2.5 km
Speed (v) = ?
Since it asks us for the speed in Km/h, we make a time conversion, from minutes to hours. Knowing that 1 hr = 60 minutes, then
To calculate the speed, divide the distance by the time. We apply the following formula:
We substitute our data in the formula and solve:
Juan's speed was: 5 km/h.