Question 16 [5 points) A rock is thrown from the edge of a cliff with a velocity of 7.8 mi's at an angle of 32" above the horizontal. If the rock lands 55 m from the bottom of the cliff, how high is the cliff? Assume no air resistance. Show all your work. Round your final answers to 2 significant fpits 19 0x ... 15 Add a File Record Audio Record Video Question 17 (5 points) An airplane maintains a heading due north at an air speed of 720 km/h. It is flying through heavy winds of 180.0 km/h, from the west. (al What is the plan peed? (b) In which direct one moving relative to the ground? (c) How long would it take the plane to fly from one city to another 500 km away, along the path in (b)? Show all your work. Round your final answers to 2 significant digits. + . Add s File Record Audio Record Video Question 18 (3 points) Some sports and activities make use of projectile mation. Select a sport or an activity that involves some form of projectile mation. Explain the importance of this motion to the sport. Can you apply the projectile motion analysis that you learned in this course directly to the sport? Indicate why or why not. + v . Add a File Record Audio Record Video