How do you know which formula to use and how do you get the answer
3. | A cannon tilted upward at 30° ﬁres a cannonball with a speedof 100 mls. What is the component of the cannonball’s velocityparallel to the ground? 4, A small plane is 100 km due east of Denver. After 1 hour of ﬂying at aconstant speed in the same direction, it is 200 km due north of Denver. What is the plane’s velocity?