# math

If a car is speeding down a road at 40 (mph), how long is the stopping distance compared to the stopping distance if the driver were going at the posted speed limit of 25 ?

Express your answer as a multiple of the stopping distance at 25

1. 👍 0
2. 👎 0
3. 👁 816
1. V1^2 / V2^2 = (40)^2 / (25)^2 = 2.56.
Therefore, the stopping distance at 40
mph is 2.56 times the stopping distance
at 25mph.

1. 👍 0
2. 👎 0
2. how far would the car travel after slamming on the breales if it was initially moving at 75 mph?

1. 👍 0
2. 👎 0

## Similar Questions

1. ### math

The stopping distance d of a car after the brakes have been applied varies directly as the square of the speed r. If a car traveling 40 mph can stop in 100 ​ft, how fast can a car travel and still stop in 256 ​ft?

asked by tevita on February 21, 2016
2. ### Physics

1.A block accelerates at 3.1 m/s2 down a plane inclined at an angle 24.0◦. Find μk between the block and the in- clined plane. The acceleration of gravity is 9.81 m/s2 . 2.A 1200 kg car moves along a horizontal road at speed v0

asked by Casey on November 2, 2016
3. ### Math

The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 3 hours for a car moving at 40 mph. How long does the trip take for a car moving at 60 mph?

asked by Anonymous on February 3, 2016
4. ### physics

On an icy road, a 2100-kg car moving at 52 km/h strikes a 410-kg truck moving in the same direction at 35 km/h. The pair is soon hit from behind by a 1800-kg car speeding at 45 km/h, and all three vehicles stick together. Find the

asked by Jay on April 24, 2019
5. ### math

The stopping distance (s) of a car varies directly as the square of its speed (v). If a car traveling at 50 mph requires 170 ft to stop, find the stopping distance for a car traveling at v2 = 55 mph.

asked by Irma on November 17, 2014
1. ### algebra

Some bank robbers leave town, speeding at 71 mph. Twelve minutes later, the police give chase, traveling at 80 mph. How long will it take after the robbery for the police to overtake the robbers?

asked by Anonymous on January 25, 2012
2. ### physics

Two cars lost in a blinding snow storm are traveling across a large field, each thinking they are on the road, as shown in the figure on the left. They collide. If the distance x is 169 meters and the red car is travelling at 15.8

asked by blah physics on May 22, 2013

When a car goes around a curve (without skidding), on a level road, Select one: a. no friction force is needed because the car simply follows the road. b. the friction force of the road on the car increases when the car’s speed

asked by Michael on November 4, 2012
4. ### CALCULUS

A gas station stands at the intersection of a north-south road and an east-west road. A police car is traveling towards the gas station from the east, chasing a stolen truck which is traveling north away from the gas station. The

asked by MILEY on April 8, 2010
5. ### Algebra

The distance required for an emergency stop for a car varies directly as the square of the car’s speed. A car traveling at 50 mph requires 140 feet to stop. What is the stopping distance for a car traveling at 30 mph? What is

asked by Elena on October 22, 2011