Recent content by jp0108

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    What Equations Can Help Find the Time Kathy Overtakes Stan in a Drag Race?

    the formulas are: vf = vi + at d = vit + 1/2at^2 vf^2 = vi^2 + 2ad d = 1/2 (vi + vf) delta t a = delta v/ t v = d/t KEy: v: m/s d: m t: s a: m/s^2 vi: initial velocity vf: finial velocity delta v: change in velocity
  2. J

    What Equations Can Help Find the Time Kathy Overtakes Stan in a Drag Race?

    Homework Statement A young woman named Kathy Kool buys a sports car that can accelerate at the rate of 4.56 m/s2. She decides to test the car by drag racing with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 0.51 s before Kathy. Stan...
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    What Is the Maximum Reaction Time for a Ranger to Avoid a Deer?

    Homework Statement A ranger in a national park is driving at 47 kilometers per hour when a deer jumps onto the road 72 meters ahead the vehicle. After a reaction time of t (s), the ranger applies the brakes to produce an acceleration of -2.6 meters per second squared. What is the maximum...