The displacement of the truck can be calculated by adding up all the movements, taking into account their direction.

1. The truck first moves 70 m west, which is in the negative direction, so this is -70 m.

2. Then it moves 120 m east, which is in the positive direction, so this is +120 m.

3. Finally, it moves 90 m west again, which is in the negative direction, so this is -90 m.

Adding these up, the total displacement is -70 m + 120 m - 90 m = -40 m.

So, the truck's resultant displacement is -40 m.

Therefore, the correct answer is c. -40 m.

Question

The displacement of the truck can be calculated by adding up all the movements, taking into account their direction.

1. The truck first moves 70 m west, which is in the negative direction, so this is -70 m.

2. Then it moves 120 m east, which is in the positive direction, so this is +120 m.

3. Finally, it moves 90 m west again, which is in the negative direction, so this is -90 m.

Adding these up, the total displacement is -70 m + 120 m - 90 m = -40 m.

So, the truck's resultant displacement is -40 m.

Therefore, the correct answer is c. -40 m.

Knowee AI · Accepted Answer

The displacement of the truck can be calculated by adding up all the movements, taking into account their direction.

1. The truck first moves 70 m west, which is in the negative direction, so this is -70 m.

2. Then it moves 120 m east, which is in the positive direction, so this is +120 m.

3. Finally, it moves 90 m west again, which is in the negative direction, so this is -90 m.

Adding these up, the total displacement is -70 m + 120 m - 90 m = -40 m.

So, the truck's resultant displacement is -40 m.

Therefore, the correct answer is c. -40 m.

A truck moves 70 m west, then moves 120 m east, and finally moves west again a distance of 90 m. If east is chosen as the positive direction, what is the truck's resultant displacement?Select one:a.40 mb.−280 mc.− 40 md.280 m