An object travels North at 6 m/s for 2 s and then travels South at 6 m/s for 7 s. What are the object's average speed and velocity?
1 Answer
May 25, 2018
Refer to the explanation.
Explanation:
Average speed is defined through the equation:
where:
bars is the average speed
d is the total distance covered
t is the time taken
So, we get:
Velocity is given by the equation:
where:
barv is the average velocity
vecd is the distance covered in a specific direction
t is the time taken
Here, I'll let the standard direction to be north. So, the south direction will be represented as negative.
So, we get:
Therefore, the average velocity is