Answer:
v = 100 [km/h]
Explanation:
To solve this problem we must identify that the movement is at constant speed, that is, there is no acceleration, therefore we must use the following expression for Speed, which relates is displacement with time.
v = d/t
where:
v = velocity [km/h]
d = displacement = 70 [km]
t = time = 0.7 [h]
v = 70/0.7 = 100 [km/h]
