Suppose a major impact that produces a mass extinction takes place on earth once every 5 million years. suppose further that if such an event occurred today, you and most other humans would be killed (this would be true even if the human species as a whole survived). such impact events are random, and one could take place at any time. calculate the probability that such an impact will occur within the next 50 years (within your lifetime).

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

Which of the following is an example of motion in two dimensions?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value