Posted April 9th, 2010
by admin
EDWIN C asked: Can an automobile having a velocity toward the north
have an acceleration toward the south?
Tags: Acceleration, Automobile, Velocity
Posted in Mathematics | 2 Comments »
Posted March 14th, 2010
by admin
runninonfaith99 asked: An automobile travels following the position function s(t)=-2.5t^2+32t. What is the acceleration of the automobile after 2 seconds?
A. 28 ft/sec
B. -5 ft/sec^2
C. 22 ft/sec
D. -2.5 ft/sec^2
Tags: Acceleration, Automobile
Posted in Mathematics | 1 Comment »
Posted March 6th, 2010
by admin
FeFe asked: The length of time to complete a door assembly on an automobile factory assembly line is normally distributed with a mean MU=7.9 minutes and standard deviation δ = 1.9 minutes. For a door selected at random, what is the probability the assembly line time will be
a.) 7 minutes or less?
b.) 10 minutes or less?
c.) between 7 and 10 minutes?
Please explain and Thank you so much!
Tags: Factory Assembly Line, Length Of Time, Standard Deviation
Posted in Mathematics | 2 Comments »
Posted February 17th, 2010
by admin
Rob L asked: How long does it take an automobile travel-
ing in the left lane at 68.9 km/h to overtake
(become even with) another car that is trav-
eling in the right lane at 42.2 km/h, when the
cars’ front bumpers are initially 57 m apart?
Answer in units of s.
Tags: Automobile Travel, Cars, Travel Ing
Posted in Mathematics | 1 Comment »
Posted December 17th, 2009
by admin
jaymie asked: Cory and Melissa are racing electronic cars around a circular track. They begin at the same time going in the same direction. Cory’s car completes a revolution in 40 seconds, while Melissa’s car completes a revolution in 35 seconds. How long will it take them before both cars reach the starting point again simultaneously?
Tags: Circular Track, Melissa, Racing Cars
Posted in Mathematics | 5 Comments »
Posted December 15th, 2009
by admin
Mario asked: A survey of 200 students at a nonresidential college was taken to determine how they got to campus during the fall term. Of those surveyed, 118 used cars, 102 used public transportation, and 70 used bikes. 48 students used cars and public transportation, 38 used cars and bikes and 26 used public transportation and bikes. 22 students used all three modes of transportation. How many used cars and public transportation but not bikes?
Tags: Cars Bikes, Modes Of Transportation, Public Transportation
Posted in Mathematics | 2 Comments »
Posted November 1st, 2009
by admin
Fggfg asked: Suppose that the coefficient of kinetic friction of the rubber of a car tire and the street is = 0.8 k μ . What is the deceleration of a car on a flat street if the driver brakes sharply, so all the wheels are locked and skidding?
Tags: Brakes, Car Tire, Coefficient Of Kinetic Friction
Posted in Mathematics | 1 Comment »
Posted September 19th, 2009
by admin
Sabrina asked:
Two cars start traveling directly toward each other at the same time from positions 480 kilometers apart. They meet after 4 hrs. If one car travels 40km per hour (kph) faster than the other car, find the speed of each car?
http://www.healthstorebargains.com/
Tags: Car Find, Kilometers, Traveling
Posted in Mathematics | 1 Comment »
Posted August 27th, 2009
by admin
ERIK asked:
Two cars leave an intersection at the same time. One drives east while the other travels south at 15 miles per hour faster than the other. After 3 hours, the cars are 225 miles apart. How fast is the southbound car driving?
http://www.cargearusa.com/blog/
Tags: Fast Car, Miles Per Hour, Time One
Posted in Mathematics | 2 Comments »
Posted August 15th, 2009
by admin
Candi asked:
The formula r=2 sqrt5L can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in Feet. How far will a car skid at 55 mph? 90 mph
http://www.bestdrumshop.com/
Tags: Fast Car, Police Car, Traveling
Posted in Mathematics | 1 Comment »
