A 18 m b 45 s c 405 m d 585 m 2 the fuel in a bottle

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a) 18 m b) 4.5 s c) 40.5 m d) 58.5 m 2) The fuel in a bottle rocket burns for 2.0 s. While burning, the rocket moves upward with an acceleration of 30 m/s 2 . Assume the rocket starts from rest… (a) What is the vertical distance the rocket travels while the fuel is still burning and how fast has it traveling at the end of the burn? 60 m, 60 m/s (b) After the fuel stops burning, the rocket continues upward but now in freefall. Estimate the maximum height that the rocket reaches. How long does it take to reach maximum height? 243.67 m, 8.12 s MULTI-OBJECT PROBLEMS : 3) A red car, initially at rest, travels east with an acceleration of 3.5m/s 2 . At the same time as the red car starts to move, a blue car is traveling west at 15m/s and accelerating at 1.2m/s 2 . If they are 600m apart the moment the red car starts to move and they are traveling towards each other, where and when will they meet? 13.1s, 300.32m east of the red car’s initial position . (I totally made up these numbers and they basically met in the middle! Crazy!)
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4) A speeder passes a parked police car at 30.0 m/s. The police car starts from rest, the moment the speeder passes, and accelerates at 2.44 m/s 2 . a) How much time passes before the speeder is overtaken by the police car? 24.59s b) How far does the speeder get before being overtaken by the police car? 737.7 m c) What would a p-t, v-t, and a-t graph look like for this story?
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  • Fall '11
  • Hill
  • pH, Velocity, Car, police car, 18 m, 15m/s, straight forward problems

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