Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 s? 

a  100.20
 
b 100+20

c 100/20

d  100-20

Respuesta :

the most appropriate answer is C !!
as speed = dis/time ...so , 100/20

For this case we have that by definition:

[tex]s = \frac {d} {t}[/tex]

Where,

  • s: speed
  • d: distance
  • t: time

We have then:

[tex]d = 100 m\\t = 20 s[/tex]

Therefore, replacing values we have:

[tex]s = \frac {100} {20}[/tex]

Answer:

An expression that calculates the speed in meters per second of an object that travels to distance of 100 m every 20 s is:

[tex]s = \frac {100} {20}[/tex]

option C