If an object moves 40 m north, 40 m west, 40 m south, and 40 m east, what's the total displacement?
2 answers:
Answer:
B. 0 m
Step-by-step explanation:
We are given the movement of an object and are required to find the total displacement.
Now, as we know that 'displacement' refers to the length of the shortest path between two points.
i.e. We are required to find the shortest path the object covers.
Now, we can see from the figure below that the given movement,
40 m north → 40 m west → 40 m south → 40 m east,
will bring the object back to the original position ' O '.
Hence, the total displacement will be 0 m.
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Answer:
The instantaneous velocity at is
.
Step-by-step explanation:
We have the position as the function
As we know that the velocity is the rate of change of position over time, so it is basically the derivative of the function.
so finding the derivate of
∴
The instantaneous velocity at
Therefore, the instantaneous velocity at is
.
Please note that the negative value indicates the direction of movement, in this case, it would be backward.