Answered

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Sam runs 9 kilometers in 2.5 hours. what is his speed?

Sagot :

CintiaSalazar

Considering the definition of speed, the speed of Sam is 3.6 [tex]\frac{km}{h}[/tex].

Definition of speed

Speed ​​is a quantity that expresses the relationship between the space traveled by an object. That is, the speed is associated with the change of position of an object in space within a certain amount of time.

The speed can be calculated using the expression:

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

Speed of Sam

In this case, you know:

  • displacement= 9 km
  • time= 2.5 h

Replacing in the definition of speed:

[tex]speed= \frac{9 km}{2.5 h}[/tex]

Solving:

speed= 3.6 [tex]\frac{km}{h}[/tex]

Finally, the speed of Sam is 3.6 [tex]\frac{km}{h}[/tex].

Learn more about speed:

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