Answer:
t=3.5 seconds
Explanation:
Moving at Constant Speed
Let's suppose and object travels in a constant direction and covers the same distances x at the same time t, we say it has a constant speed. It can be computed as:
[tex]\displaystyle v=\frac{x}{t}[/tex]
The time taken to go through the distance x is computed by
[tex]\displaystyle t=\frac{x}{v}[/tex]
Our shark moves at v=12 m/s and we need to compute the time it takes to swim x=42 m, so we have
[tex]\displaystyle t=\frac{42}{12}[/tex]
[tex]\boxed{t=3.5\ seconds}[/tex]
It takes the shark 3.5 seconds to swim 42 m
