Question

While john is traveling along a straight interstate highway, he notices that the mile marker reads 243 km. John travels until he reaches the 143 km marker and then retraces his path to the 163 km marker. What is johns resultant displacement from the 243 km marker? Answer in units of km.

Answer 1

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Answer 2

Hence, The answer is 80 km

GIVEN

While john is traveling along a straight interstate highway, he notices that the mile marker reads 243 km. John travels until he reaches the 143 km marker and then retraces his path to the 163 km marker.

TO FIND

What is johns resultant displacement from the 243 km marker?

SOLUTION

We can simply solve the above problem as follows;

We know that displacement is defined as straight line distance between the final point and initial point.

According to the question;

First mile maker, A₁ = 243 km

Second mile marker, A₂ = 143 km

Third mile marker, A₃ = 163 km

Displacement = A₁ - A₃

= 243 - 163

= 80 km

Hence, The answer is 80 km

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