Answer:
what is the answers? i cant help you without the answers 
Explanation:
 
        
             
        
        
        
D=m/V therefore the answer is 120/200 or 0.6
        
             
        
        
        
Instantaneous velocity is the velocity at a specific instant in time. I bet you are taking Honors Physics. 
        
             
        
        
        
¡Hellow!
For this problem, first, lets convert the seconds in hours:
5,4x10³ 5400
 5400
h = sec / 3600
h = 5400 s / 3600
h = 1,5 
Let's recabe information:
d (Distance) = 386 km
t (Time) = 1,5 h
v (Velocity) = ?
For calculate velocity, let's applicate formula:
                                                     
Reeplace according we information:
386 km = v * 1,5 h
v = 386 km / 1,5 h
v = 257,33 km/h
The velocity of the train is of <u>257,33 kilometers for hour.</u>
<u></u>
Extra:
For convert km/h to m/s, we divide the velocity of km/h for 3,6:
m/s = km/h / 3,6
Let's reeplace:
m/s = 257,33 km/h / 3,6
m/s = 71,48
¿Good Luck?