Can you please help me with this physics question

See the answers below

Explanation:

We can solve both problems using vector sum.

a)

Let's assume the forces that help the diver dive as positive downward, and the forces that oppose upward, as negative

The drag force is horizontal d this way in the horizontal direction we will only have the drag force that produces the water stream.

b)

Let's assume the forces that propel the rocket upwards as positive and forces like the weight of the rocket and other elements as negative forces.

no

sodium is solid at rt