A girl is running towards a fixed plane mirror. She sees that the image is approaching towards her with speed 14 m/s. What is the speed of the girl?
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A girl is running towards a fixed plane mirror. She sees that the image is approaching towards her with speed 14 m/s. What is the speed of the girl?
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Question:
A girl is running towards a fixed plane mirror. She sees that the image is approaching towards her with speed 14 m/s. What is the speed of the girl?
Answer:
Let speed of girl be v
The speed of image that will appear to girl is v+v=2v
Given,
2v=14
v=7 m/s
Speed of girl is 7 m/s