Question

Is Δv = vf - vi positive or negative?
1) Positive
2) Negative

Answer 1

The change in velocity, represented as Δv, is positive or negative depending on the direction of the object's motion. If the object is moving in the positive direction, the change in velocity is positive (+). If the object is moving in the negative direction, the change in velocity is negative (-).

Step-by-step explanation:

The change in velocity, represented as ∆v, is positive or negative depending on the direction of the object's motion. If the object is moving in the positive direction, the change in velocity is positive (+). If the object is moving in the negative direction, the change in velocity is negative (-).

For example, if an object starts at a velocity of 10 m/s and then increases to 20 m/s, the change in velocity would be 20 - 10 = 10 m/s, which is positive. Conversely, if an object starts at a velocity of -10 m/s and then decreases to -5 m/s, the change in velocity would be -5 - (-10) = 5 m/s, which is also positive.