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A car travels a distance of 200 miles in 3.5 hours in a given trip. What is the average speed of the car in that
trip? Write the data given, equation, substitution and the answer with correct units for full credit.

Sagot :

CintiaSalazar

Taking into account the definition of speed, the average speed of the car in the trip is 57.14 [tex]\frac{miles}{hour}[/tex].

Definition of speed

Speed is a physical magnitude that relates the displacement of an object and the time it takes to make this change in position.

So, the speed can be defined as the amount of space traveled per unit of time with which a body moves and can be calculated using the expression:

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

Speed has units of [tex]\frac{distance}{time}[/tex], such as [tex]\frac{meters}{second}[/tex] or [tex]\frac{miles}{hour}[/tex].

Average speed of the car

In this case, you know that:

  • displacement= 200 miles
  • time= 3.5 hours

Replacing in the definition of speed:

[tex]speed=\frac{200 miles}{3.5 hours}[/tex]

speed= 57.14 [tex]\frac{miles}{hour}[/tex]

Finally, the average speed of the car in the trip is 57.14 [tex]\frac{miles}{hour}[/tex].

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