11. "The magnitude of a vector is a scalar." Explain this statement. 12. A rock is dropped at the same instant that a ball, at the same initial elevation, is thrown horizontally. Which will have the greater velocity when it reaches ground level? Which will have the greater velocity when it reaches ground level? vertical 13. A roller coaster travels 135 ft at an angle of 40o above the horizontal. How far does it move horizontally? 14. A projectile is fired with a total velocity of 120 m/s at an angle of 38o above the horizontal. Describe the x and y component motions in words. How far does it go? (Assume it lands at the same height it was launched.) 15. A rock is thrown horizontally off a at 10 m/s. It hits the ground 4.5 seconds later. (a) can you draw a motion map for the rock's path? (b) How high is the cliff? (c) How far does the rock land from the base of the cliff? 16. The fastest recorded pitch in major-league baseball, thrown by Nolan Ryan in 1974, was
11. "The magnitude of a vector is a scalar." Explain this statement. 12. A rock is dropped at the same instant that a ball, at the same initial elevation, is thrown horizontally. Which will have the greater velocity when it reaches ground level? Which will have the greater vertical velocity when it reaches ground level? 13. A roller coaster travels 135 ft at an angle of 40o above the horizontal. How far does it move horizontally? 14. A projectile is fired with a total velocity of 120 m/s at an angle of 38o above the horizontal. Describe the x and y component motions in words. How far does it go? (Assume it lands at the same height it was launched.) 15. A rock is thrown horizontally off a at 10 m/s. It hits the ground 4.5 seconds later. (a) can you draw a motion map for the rock's path? (b) How high is the cliff? (c) How far does the rock land from the base of the cliff? 16. The fastest recorded pitch in major-league baseball, thrown by Nolan Ryan in 1974, was