Vector: I hope this helps!
Let the corner of the wall and floor is our origin
Now the end of the ladder is on the floor is at distance x and top end on the wall is at distance y from this corner.
So we will use Pythagoras Theorem to find the length of the ladder.

now if we differentiate whole equation with time

now the speed of the end of the ladder at the end of the floor will be given as

here
is the speed of end of the ladder on the wall.
so here we also know that


now we will plug in all values in the equation


so the end of the ladder on the floor will move with speed v = 0.44 ft/s
The forces are gravity (weighing down) and internal gas pressure (pushing away from the surface).
Earth's land and ocean surface to the atmosphere.
Answer:
Manuel function can be used when we move it. Oscillate function automatically moves on its own. The pulse function mimics the pulse of a heart rate and can only be used by pushing the button.
Explanation: