A ball is thrown straight up with an initial speed
of 30 m/s. What is its speed after 4.2 s?

vf = -11.16 m/s

Explanation:

vf = vi + gt

vf = 30 + (-9.8)(4.2)

vf = -11.16 m/s

11.16 m/s.

Notice I'm not telling you whether that's up or down, because you only asked for the speed, which has no direction.

This would have been a great question to ask for the ball's velocity.

im guessing the west of station b

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.