unit 1 summative

unit 1 summative
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  • Bank
  • v= d     t v= 100      40 v= 2.5 m/s  
  • V2 = v1+at V2 =0+ (3)(42) V2 = 126 m/s
  • One quiet Friday afternoon in Fenelon Falls, a known felon robbed the bank. The police were then called and as a result the robber jumped into his get away car and drove away.
  • C2 = 202+ 110 C= 400 + 12100 C= 12500 C=111.8m/s C=100m/s Tan  = Opp                Adj Tan  = 20           110 Tan  = 10o  
  • After 40 seconds of driving, the robber travelled 100 metres. After passing a speed detector the sign showed that the car was travelling an average velocity of 2.5 m/s.
  • Not long after, the get away car was accelerating at a rate of 3 m/s2. After 42 seconds the police car catches up to the robber. The police car was travelling at a velocity of 126 m/s when the police caught up to the getaway car.
  • You have the right to remain silent...
  • V22 = V12 + 2ad 02 = 282 2(a)(18) 0 = 784 + 36a -784 = 36a a = -784         36 a = -21.78 m/s2 a= 22 m/s2
  • The getaway car then turns the corner and is heading 110m/s[N] but there is also a wind speed of 20m/s[W] coming from the East. The getaway cars resulting velocity with respect to the ground is 100m/s [N 10o W].  
  • After turning the corner the getaway car is going at a speed of 28 m/s. While travelling at that speed, the police man ejects a grappling hook that attaches onto the getaway car. 
  • After the hook attached to the get away car it took 18 metres for both cars to come to a complete stop. The rate of deceleration is 22m/s2.
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