The athlete at point A runs 150m east, then 70m west and then 100m east. Determine the resultant displacement of the athlete relative to point A

According to the question,

Point A runs:

Now,

The displacement will be:

=

=

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Thus the answer above is correct.

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180m to the east

Explanation:

Displacement is the distance traveled in a specific direction. It is a vector quantity with both magnitude and direction. Therefore, the start and finish position is very paramount.

  point A runs 150m east,

   70m west

  100m east

                                       150m

                →

                                                                   70m

                                                         ←

                                                                   100m

                                                         →

The displacement of the athlete  = 150 - 80 + 100  = 180m to the east

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.