* Math 144 Week 11 - After Activity Worksheet Vector Applications 1. What are the new formulas that were in this activity? 2. Why are they useful? 3. Other than the examples in the activity, where else would you see these formulas used? 4. Find the angle between the following vectors: a. U'= V= b. U\"= V'= c. U'= V'= 5. Solve the following work problems. Include a diagram with the vectors labeled. a. How much work does an elephant do while moving a circus wagon 200 meters with a pulling force of 200 N and the angle of the straps to the wagon is 20' ? b. Jack uses a force of 25 Newtons to lift his grocery bag while doing 50 Joules of work, how far did he lift the bag? c. The baseball player does 1234J of work when hitting a baseball into left field. Assuming the baseball landed 100 meters away from Homeplate, how much force did the player use to hit the ball? (If you need an angle for this problem, come up with one that is reasonable and be sure to state what angle you used and why.)