anonymous
  • anonymous
Driving home in a hurry on the highway back from Holyrood, Harry and Harriet in their new Honda hatchback convertible, see a moose in their path a distance d = 71.0 m down the road . Travelling at 110 km/h, Harry applies the brakes causing the car to slow down with an acceleration a = 25.0 km/h per second. The mass of the car and occupants is 1480 kg. a)By calculating how far the car travels, determine the answer to the question “Do Harry and Harriet hit the moose?”? b) What is the work down by the road in bringing the car to a halt?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
i can do the b part, but really need help with the a part
TuringTest
  • TuringTest
this is an important kinematic equation you should know:\[v_f^2=v_i^2+2ad\]where vf is the final velocity and vi id the initial velocity. In this case acceleration is negative, and the final velocity is zero, so this equation becomes\[0=v_i^2-2ad\]solve this for d. If d<71 meters, they don't hit the moose.
anonymous
  • anonymous
thanks

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