A dog runs east for 21.25 meters. it takes the dog 8.5 seconds to cover this distance. what is the dog's average velocity?
1 answer:
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<u>Answer:</u>
Option A is the correct answer.
<u>Explanation:</u>
Let the east point towards positive X-axis and north point towards positive Y-axis.
First walking 1.2 km north, displacement = 1.2 j km
Secondly 1.6 km east, displacement = 1.6 i km
Total displacement = (1.6 i + 1.2 j) km
Magnitude =
Angle of resultant with positive X - axis = = 36.87⁰ east of north.