physics

A race car is able to accelerate at a rate of 14m/s2. After exiting a turn at a speed of 15m/s, the car enters a straightaway and accelerates to a speed of 96m/s just as it reaches the end of the straightaway and enters the next turn.
A)how long did it take the car to accelerate to 96m/s.
b) how long is the straightaway, from the point where the car began accelerating the to point where it entered the next turn?

  1. 👍 0
  2. 👎 0
  3. 👁 140
asked by Edward
  1. a. Vf = Vo + at,
    t = (Vf-Vo)/a = (96-15) / 14 = 5.79s.

    b. Vf^2 = Vo^2 + 2ad,
    d = (Vf^2-Vo^2)/2a,
    d = (9216-225) / 28 = 321m.

    1. 👍 0
    2. 👎 0
    posted by Henry

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    2 cars are in a race the first car is 200m ahead of the second car.the first car is moving with a uniform velocity of 30m/s while the second car starts from rest and accelerate to a rate of 4m/s how far and how long will it take

    asked by Seun on February 9, 2011
  2. Algebra

    In an automobile race, the rate of one car was 120 mi/hr and the rate of another was 105 mi/hr. If the faster car finished the race 20 minutes before the slower one, what was the distance of the race?

    asked by Raquel on September 18, 2016
  3. Math

    In an automobile race, the rate of one car was 120 mi/hr and the rate of another was 105 mi/hr. If the faster car finished the race 20 minutes before the slower one, what was the distance of the race?

    asked by Raquel on September 15, 2016
  4. Physics

    Your car can accelerate at 5m/^2 without a trailer. You add a trailer to your car that has 3 times the mass of your car. At what rate can your car (plus trailer) accelerate now? After accelerating the car travels at a constant

    asked by Samantha on September 23, 2012
  5. physics

    A race car is making a U-turn at constant speed. The coefficient of friction between the tires and the track is μs = 1.0. If the radius of the curve is 40 m, what is the maximum speed at which the car can turn without sliding?

    asked by HELP!!!! on March 19, 2011
  6. physics

    A 870-kg race car can drive around an unbanked turn at a maximum speed of 41 m/s without slipping. The turn has a radius of 180 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 11000 N

    asked by cswidener on May 25, 2011
  7. physics

    A 950-kg race car can drive around an unbanked turn at a maximum speed of 46 m/s without slipping. The turn has a radius of 120 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 12000 N

    asked by sammy on July 1, 2013
  8. physics1

    A 850-kg race car can drive around an unbanked turn at a maximum speed of 61 m/s without slipping. The turn has a radius of 160 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 11000 N

    asked by Gina on February 14, 2011
  9. physics

    A 850-kg race car can drive around an unbanked turn at a maximum speed of 61 m/s without slipping. The turn has a radius of 160 m. Air flowing over the car's wing exerts a downward-pointing force (called the downforce) of 11000 N

    asked by Gina on February 15, 2011
  10. PHYSICS

    How do I solve this? A 700-kg race car can drive around an unbanked turn at a maximum speed of 41 m/s without slipping. The turn has a radius of 190 m. Air flowing over the car's wing exerts a downward-pointing force (called the

    asked by KS on April 26, 2015

More Similar Questions