If you repeated this experiment, which options could lead to more precise results? check all that apply
increase the drop heights from the top of a building, using the same lever
use a video camera to record the height of each beanbag with greater accuracy
use a pressure sensor to record the force of the soda bottle more accurately.
increase the number of trials for each experiment by a factor of three.
increase efficiency by examining mass and speed at the same time in the same trial
throw the bottle at the lever as hard as you can, instead of dropping it, to create maximum ke.

1point) a skydiver weighing 130 lb (including equipment) falls vertically downward from an altitude of 14,000 ft and opens the parachute after 20 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.85|v|0.85|v| when the parachute is closed and is of magnitude 17|v|17|v| when the parachute is open, where the velocity vv is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. find the speed of the skydiver when the parachute opens. speed is 150.6121788 ft/s find the skydiver's height when the parachute opens. height is 2338.98591 ft find the limiting velocity vlvl after the parachute opens. (think about whether this should be positive or negative.) vl=vl= 7.647 ft/s

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Which of the following describes how a microwave heats food