Question

A plane travels south for 120 km. The plane then travels north for 45 km.

If north is taken as the positive direction, what is the displacement of the plane?

Answer 1

Answer: The displacement of the plane is 75 km to the north.

Step-by-step explanation: This is because the plane first travels south (negative direction) for 120 km and then travels north (positive direction) for 45 km.

When we take north as positive direction, the displacement can be calculated by subtracting the southward distance from the northward distance.

So, 45km (northward) - 120km (southward) = -75 km (north).