From the top of a cliff, 100m above sea level, a stone is thrown vertically
upward with a velocity of 30 m/s.
After how many seconds and with
what velocity will it hit the sea?

The answer is c hope this

Depending on how the continental plates move it can cause a continental scale shift.

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction