# 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
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

## 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