<span>Using the formula Final speed = initial speed + gravity * time, we can compare the results.
Being gravity approximately 9.8 m/s^2, and being both the rock and the ball dropped, we can assume that the initial speed of both is zero, so:
Ball: 9.8m/s^2 * 2s = 18.6 m/s
Rock: 9.8 m/s^2 * 4 = 37.2 m/s
The speed of the rock is the double of the speed of the ball at the moment just before landing, because it has been dropped in a greater height than the ball, allowing the rock to reach a greater speed than the ball.</span>
The answer is number. The statistic is usually a numerical value that we have obtained through the application of different amthematical algorithms to our datasets. Examples of such algorithms include summary measures, the arithmetic mean, the standard deviation, etc. Statistics are used to give us information about our samples and subgroups, whereas parametrs are numerical values that give us infromation about our population values.
A:a diver jumping Off a diving Board And falling to the swimming pool below
