Imagine yourself standing in front of a plane mirror. you then start to walk towards the mirror at 1.8 ms -1. how fast will your image in the mirror will approach you? (a) 1.8 m/s (b) 3.6 m/s (c) 0.9 m/s (d) 4.5 m/s

The correct answer is option 'b':

Explanation:

As we know that the image formed by a plane mirror is at same distance behind the mirror as the object is placed in front of the mirror.

Hence we can conclude that the speed of the image as it moves towards the mirror is equal to the speed of the object as it moves towards the mirror.

Thus the relative speed of the object and the image can be calculated as

where

is the speed of the image towards mirror

is the speed of the object towards mirror

Applying values we obtain the relative speed as

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !