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# 2013 ppt batfink projectile review

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### 2013 ppt batfink projectile review

1. 1. Know Definitions of Key Terms & Symbols
2. 2. Focus during the entire Power Point activity. Solidify your studying skills during this class period. Perform your work in your science journal so you have created a study guide for the test. Call me over if you are having difficulty getting started. If your answer is confirmed as correct, become a student/teacher and help someone in class who does not understand the method used to solve the problem.
3. 3. Hugo Ago-go pushes the barrel with Batfink in it towards the end of the cliff with a 85 N force over a distance of 12 m before the barrel leaves the cliff. The force of friction is 7 N. Draw a force diagram of the situation.
4. 4. y Fs 735 N Ff 2.25 N Fa 85 N Fg 735 N x
5. 5. Calculate the acceleration of the barrel in the x axis.
6. 6. SOLUTION: Acceleration of Batfink and the barrel. mbf = 50 kg mb = 25 kg g = -9.8 m/s2 Fa = 85 N Ff = 7 N Xi = 0 m X = 12 m a a = 1.04 m/s2
7. 7. What is the Vf of the barrel just before it falls off the cliff?
8. 8. SOLUTION: Final velocity of Batfink and the barrel while still on the cliff. mbf = 50 kg mb = 25 kg a = 1.04 m/s2 g = -9.8 m/s2 Fa = 85 N Ff = 7 N Xi = 0 m a
9. 9. Batfink is pushed off of the 52 meter high Canadian Horseshoe Falls towards the dried up Maid of the Mist pool. How much time will Batfink have to escape from the barrel once it leaves the cliff?
10. 10. SOLUTION: Maximum time for escape. Vi = 0 m/s g = -9.8 m/s2 Yf = 0 m Yi = 52 m ti = 0 s tf Vf t = 3.26 s
11. 11. SOLUTION: Final velocity of Batfink and the barrel. Vi = 0 m/s Vf g = -9.8 m/s2 Yi = 52 m Yf = 0 m ti = 0 s tf = 3.19 s Vf = -31.95 m/s
12. 12. SOLUTION: Final velocity of Batfink and the barrel. Vyi = 0 m/s Xf g = -9.8 m/s2 Yi = 52 m Yf = 0 m ti = 0 s tf = 3.19 s Xf = 16.3 m V = -31.3 m/s