Answer:
[tex]\boxed {\boxed {\sf A. \ 0.60 \ km}}[/tex]
Step-by-step explanation:
Distance (how far the submarine travelled) can be found by multiplying the speed by the time.
[tex]d=s*t[/tex]
The speed is 2.4 kilometers per hour.
The time is 0.25 hours.
[tex]s= 2.4 \ km/hr \\t= 0.25 \ hr[/tex]
Substitute the values into the formula.
[tex]d= 2.4 \ km/hr * 0.25 \ hr[/tex]
Multiply. Note that the hours (hr) will cancel each other out.
[tex]d= 0.6 \ km/hr *hr[/tex]
[tex]d= 0.6 \ km[/tex]
The submarine travelled 0.6 kilometers in 0.25 hours.
