Agolf ball is launched at an angle of 20° with respect to the horizontal, with a speed of 60 m/ and a rotation rate of 90 / neglecting air resistance, determine the number of revolutions the ball makes by the time it reaches the maximum height.

and 1and 1

d. air pressure decreases as altitude increases.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.