Chapter+3+Vectors+,+2+D+Motion

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Bobby Hummel Chapter 3 Vectors and 2 Dimensional motion  **FORMULAS!**

Example Problems: 1. A football is kicked at a speed of 21 m/s at an angle of 17 degrees, seperate these into x and y components! A) x=26.52m/s y=15.55 m/s B) x=23.42 m/s y= 6.14 m/s C) x=20 m/s y=11.28 m/s D) x=20.01 m/s y=6.14 m/s 2. A man travels 35 meters at an angle of 43 degrees above the positive y axis. He then travels 15 meters at an angle of 20 degrees above the positive x axis. Combine these into one vector to find his displacement! A) 36.89 m @ 35.21 degrees B) 49.16 m @ 36.16 degrees C) 45.53 m @ 33.40 degrees D) 22.45 m @ 39.33 degrees 3. A ball is kicked off a cliff with a horizontal velocity of 10 m/s and travels for 6 seconds before hitting the ground. How far does it travel? A) 1.66m B) 60m C) 16m D) 69m 4. A bullet is fired at 10,000 m/s at an angle of 89 degrees. What is the vertical component of the velocity? A) 9,998.48 m/s B) 174.52 m/s C) 9,854.43 m/s D) 9,995.59 m/s 5. If a missile has a vertical velocity of 0 m/s, 2100 seconds after it's launch, then what was it's original veritcal velocity? (Acceleration due to gravity=-9.8 m/s) A) 30548 m/s B) 20580 m/s C) 18640 m/s D) 33410 m/s 6. A golf ball is struck from the ground at a speed of 6700 m/s, at an angle of 48 degrees and travels for 300 seconds. How far does it travel? A) 3498800 m B) 1239900 m C) 1765444 m D) 1344953 m