Respuesta :

Answer:

200 seconds are required

*Explanation:

speed:20 m/s

distance:4km

time:?

so we need to find the amount of time in this word problem but first all the units should be the same so convert km to m

To do this (multiply by 1000)

4 km × 1000 = 4000m

now write the formula for finding time which is

[tex]time = \frac{distance}{speed} [/tex]

[tex]time = \frac{4000}{20} [/tex]

time= 200 seconds