Answer:
3.7 m/s
Step-by-step explanation:
We can only calculate Jose's instantaneous speed assuming that he is travelling at constant speed during the first 431 s. If this is the case, then the speed can be found as
where
d = 1.6 km = 1600 m is the distance covered so far by Jose
t = 431 s is the time taken
Solving the equation, we find the speed: