Crall decides that with the kinematic equations of motion and the value of g (9.81 m/s2) she should be able to make quantitative predictions of the ball's motion. she decides to release the ball at a height of 40 m above the ground and that she wants the ball to hit the ground at time 4 s later. she then calculates the speed the elevator needs to be traveling in order for the ball to reach the ground at this time. which is the correct result of crall's calculation? −9.6 m/s 29.6 m/s

Acube has a volume of 2011 cubic inches. what is the angle measure between a side of a cube and its interior diagonal?

Aregular polygon has angkes of size 150° each.how many side has the polygon

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !