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it takes a car 1.75h to go from mile marker 10 to mile marker 115. What is the average speed of the car


A 1.6

B65

C183

D60

Verified Answer :

Average speed = change in position / total time = 115 - 10 / 1.75 = 60 miles/hr. D is the correct option.

The average speed of the car for the given distance and time is 60 mph.

The given parameters;

  • time of motion of the car, t = 1.75 h
  • initial position, x₁ = 10 miles
  • final position, x₂ = 115 miles

The average speed of the car is determined by dividing the total distance by total time of motion as shown below;

\(average \ speed = \frac{total \ distance}{total \ time} \\\\average \ speed = \frac{115 - 10}{1.75} \\\\average \ speed = 60 \ mph\)

Thus, the average speed of the car for the given distance and time is 60 mph.

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