A bicyclist starts at point P and travels around a triangular path that takes her through points Q and R before returning to the point P as shown here. What is the magnitude of her net displacement for the entire round trip? A. 100 m B. 200 m C. 600 m D. 1200 m E. zero

Displacement by cyclist is zero.

Explanation:

In the given question bicyclist is travelling in a rectangular track having P , Q and R edges.

The bicyclist starts from P and travel through Q and R and returned to P again.

We need to find its displacement.

We know displacement  of a body is its difference between its initial position to final position.

Here in the given question the bicyclist returns to P again.

Therefore, total displacement by bicyclist is zero.

Hence, this is the required solution.

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