A train moves with a constant velocity for 15s for 155m. How fast is the train moving?

Answer: 10.3m/s

Explanation:

In theory and for a constant velocity the physics expression states that:

Eq (1) : distance = velocity times time d = v*t for v=constant.

If we solve Eq (1) for the velocity (v) we obtain:

Eq (2) : velocity = distance divided by time v = d/t

Substituting the known values for t=15s and d=155m we get:

v = 155 / 15 v = 10.3