A car travels north along a straight highway at an average speed of 85 km/h. After driving 2.0 km, the car passes a gas station and continue

Question

A car travels north along a straight highway at an average speed of 85 km/h. After driving 2.0 km, the car passes a gas station and continues along the highway. What is the car’s position relative to the start of its trip 0.25 h after it passes the gas station?

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Edana Edana 5 years 2021-07-20T10:12:01+00:00 1 Answers 378 views 0

Answers ( )

  1. kimcuc
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    2021-07-20T10:13:51+00:00
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    Answer:

       x_total = 23250 m

    Explanation:

    This is a uniform motion exercise, the equation that describes the motion is

             v = x / t

    the position is

            x = v t

    let’s reduce the magnitude to the SI system

            v = 85 km / h (1000 m / 1km) (1h / 3600 s) = 23.61 m / s

             t = 0.25 h (3600 s / 1h) = 900 s

    let’s calculate

             x₁ = v t₁

             x₁ = 23.61   900

             x₁ = 21250 m

    The distance from the origin is

             x_total = x_station + x₁

             x_total = 2000 + 21250

             x_total = 23250 m

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