Question

what is the resultant of combining 1000 m/s up and 800 m/s up?
200 m/s up
200 m/s down
1800 m/s up
1800 m/s down

Explanation:

Step1: Identify velocities' direction

Both velocities are upwards.

Step2: Add the magnitudes

Since they are in the same direction, we add the magnitudes. $1000 + 800=1800$ m/s. The direction remains upwards.

Answer:

1800 m/s up