Tuesday

September 27, 2016
Number of results: 14,117

**inter Alegbra**

Pick a car and find its top speed. Assuming that your chosen car reaches its top speed at the top of a ramp, leaving the ramp vertically 20 feet about the ground: 1.) When will the car land back on the ground? 2.) When would the car be traveling the fastest? 3.) When would the...

*November 14, 2010 by linda*

**physical**

You are traveling in a car toward a hill at a speed of 42.1 mph. The car's horn emits sound waves of frequency 251 Hz, which move with a speed of 343 m/s. a) Determine the frequency with which the waves strike the hill. b) What is the frequency of the reflected sound waves you...

*July 16, 2012 by itufizik*

**Math **

Two airplanes leave Dallas, Texas traveling in opposite directions. One is traveling 28 mph faster than the other airplane. How fast is the faster airplane traveling if the two airplanes are 2,320 miles apart after 2 hours and 30 minutes?

*July 17, 2016 by Mike*

**physics**

1. A ball moving horizontally clears a net 2 meters high. What maximum speed can it have if it is to fall within 5 meters of the net? 2.A pulley system lifts a load of 800 Newtons, 20 centimeters while the rope pulling it moves 100 cm. a. How much force must be applied to lift...

*October 18, 2011 by mimi*

**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?

*January 25, 2012 by Anonymous*

**physics**

A car traveling at 120 strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.90 . What was the magnitude of the average acceleration of the driver during the collision? Express the answer in terms of "'s," where 1.00 = 9.80 .

*October 1, 2011 by Helen*

**physics**

A car traveling at 120 strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.90 . What was the magnitude of the average acceleration of the driver during the collision? Express the answer in terms of "'s," where 1.00 = 9.80 .

*October 1, 2011 by Helen*

**physics**

A car with a mass of 1000kg is travelling at a constant velocity. The force from the engine is 200Newtons. Calculate the acceleration of the car using the formula f=ma. How long will it take this car to travel 0-60 mph (n.b. 1mph = 0.45m/s)

*May 16, 2013 by j*

**physics**

You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which move with a speed of 340 m/s.The frequency with which the waves strike the hill is 254.7Hz and the frequency of the reflected sound waves you hear 271.2...

*March 31, 2012 by sara*

**Physics**

A car is behind a truck going 18 m/s on the highway. The car's driver looks for an opportunity to pass, guessing that his car can accelerate at 0.6 m/s2 and that he has to cover the 20-m length of the truck, plus 10-m extra space at the rear of the truck and 10 m more at the ...

*February 13, 2016 by Azel*

**Physics**

You are driving at the speed of 33.4 m/s (74.7296 mph) when suddenly the car in front of you (previously traveling at the same speed) brakes. Considering an average human reaction, you press your brakes 0.484 s later. Assume that the brakes on both cars are fully engaged and ...

*January 8, 2011 by Chris*

**science (check answers)**

4.how does the kinectic energy of a 10,000-kg train traveling at a speed of 10 m/s compare with that of a 2,600-kg compact car traveling twice as fast? A.the train has less kinectic energy than the car. B.the train has more kinectic energy than the car.(I PICK THIS) C.the ...

*January 29, 2014 by annabelle*

**Physics**

The chemical potential energy of a certain amount of gasoline is converted into kinetic energy in a truck that increases its speed from 0 mph to 30 mph. To pass another truck the driver accelerates from 30 mph to 60 mph. Compared to the energy required to go from 0 to 30 mph, ...

*March 16, 2009 by Harold*

**Physics**

The chemical potential energy of a certain amount of gasoline is converted into kinetic energy in a truck that increases its speed from 0 mph to 30 mph. To pass another truck the driver accelerates from 30 mph to 60 mph. Compared to the energy required to go from 0 to 30 mph, ...

*March 17, 2009 by Harold*

**Trigonometry**

A car traveling at a constant rate due east passes an interstate exit that is 1.0 mile from a gas station. The gas station is S50°E of the exit. After the car has traveled for 2.0 minutes, its bearing to the gas station is S55°W. How fast is the car traveling?

*September 29, 2014 by Theresa*

**Physic**

A car traveling 100 km/h is 200m away from a truck traveling 50 km/h (in the same direction). Assuming constant braking acceleration, what is the minimum deceleration the car must have if it is not to hit the truck? Can someone hint me on how I can start this problem? Thanks

*August 28, 2013 by Shadow*

**algebra d=rt word problem**

A car travels from one town to another at a speed of 32 mph. If it had gone 4 mph faster, it could have made the trip in 1/2 hour less time. How far apart are the towns.

*February 26, 2009 by mark*

**science(1answer)**

4.how does the kinectic energy of a 10,000-kg train traveling at a speed of 10 m/s compare with that of a 2,600-kg compact car traveling twice as fast? A.the train has less kinectic energy than the car. B.the train has more kinectic energy than the car.(I PICK THIS) C.the ...

*January 29, 2014 by annabelle*

**Physics**

A car traveling 88 km/h is 80 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck

*September 16, 2012 by Haleigh*

**HCC**

A motorcycle is following a car that is traveling at constant speed on a straight highway. Initially, the car and the motorcycle are both traveling at the same speed of 19.5 m/s , and the distance between them is 57.0 m . After t1 = 4.00 s , the motorcycle starts to accelerate...

*September 25, 2016 by Mary*

**math**

two trains are at stations that are 800 miles apart. if they start traveling toward each other at the same time one averaging 67 mph and the other averaging 53 mph in how many hours will they pass each other?

*October 22, 2015 by kim*

**Calculus**

According to Car and Driver, an Alfa Romeo going 70 mph requires 177 feet to stop. Assuming that the stopping distance is proportional to the square of the velocity, find the stopping distance required by an Alfa Romeo going at 55 mph and at 115 mph.

*January 19, 2011 by Brittany *

**calculus**

According to Car and Driver, an Alfa Romeo going 70 mph requires 177 feet to stop. Assuming that the stopping distance is proportional to the square of the velocity, find the stopping distance required by an Alfa Romeo going at 45 mph and at 115 mph.

*January 19, 2011 by Jamie*

**Algebra**

A car travels from one town to another at a speed of 42 mph. If it had gone 6 mph faster, it could have made the trip in a half hour less time. How far apart are the towns? The answer is ___ mi?

*February 19, 2014 by spacegazing*

**physics**

The driver of a car wishes to pass a truck that is traveling at a constant speed of 19.0 m/s . Initially, the car is also traveling at a speed 19.0 m/s and its front bumper is a distance 24.3 m behind the truck's rear bumper. The car begins accelerating at a constant ...

*October 11, 2015 by elif*

**algebra help**

Two motorcyclists start at the same point and travel in opposite directions. One travel 3 mph faster than the other. In two hours they are 206 miles apart. How fast is each traveling? The speed of the slower motorcyclist is ___ mph.

*October 21, 2010 by kate*

**Algebra 1**

Two bullet trains leave the station at the same time traveling in opposite direction. The northbound train goes 125 mph and the southbound train goes 120 mph. After how long will they be 735 miles apart?

*December 5, 2013 by Ale*

**physics**

A car traveling 90km/h is 100m behind a truck traveling 75km/h. How long will it take the car to reach the truck? which one of newtons 4 equations should be used in order to solve this equation? V=Vo + at X=Xo + Vot + 1/2 at2 V2= Vo2 + 2a(X-Xo) _ V=V+vo/2 any help i can get is...

*July 17, 2008 by anonymous*

**Physics**

A car traveling 91km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.93m . What was the magnitude of the average acceleration of the driver during the collision? Express the answer in terms of "g's," where 1.00g=9.80m/s2

*September 11, 2014 by Anonymous*

**physics**

A car traveling 56 km/h is 24 m from a barrier when the driver slams on the brakes. The car hits the barrier 2s later a) what is the car's constant deceleration before the impact? b)How fast is the car traveling at impact? I don't get the impact parts... I'm not entirely sure ...

*September 11, 2006 by sarah*

**Chemistry**

Hi, This is a challenge question for my intro chemistry class and I'd really like to do it. Its in 2 parts. 1. Consider a 2790-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time...

*October 1, 2013 by bridget *

**math**

For a motor vehicle traveling at r miles per hour, the distance d in feet required to stop is approximately d=0.05r^2 + r. If a school bus is traveling at 45 mph, how many feet, to the nearest foot would it travel?

*December 14, 2013 by Cynthia*

**math**

There are 2 trains, one in Los Angeles and the other one in Denver. Train 1 left Los Angeles at 10am and was traveling east at a speed of 100 mph. Train 2 left Denver at 1pm and was traveling west at 80 mph. Which train is closer to Los Angeles when they meet each other?

*June 15, 2016 by bev*

**physics**

Two cars start from rest at the same location and at the same instant and race along a straight track. Car A accelerates at 6.6 fps2 to a speed of 90 mph and then runs at this constant speed. Car B accelerates at 4.4 fps2 to a speed of 96 mph and then runs a a constant speed...

*January 22, 2011 by David*

**College Physics**

A car initially traveling northeast (45° N of E) at 28.3 m/s takes 6.0 s to turn to the east. After the turn, the car is traveling due east at 20.0 m/s. What is the value and direction of the change in velocity?

*September 19, 2010 by Angela*

**Algebraic**

Salem and Vernon ville are 168 miles apart. A car leaves Salem traveling towards Vernonville, and another car leaves Vernonville at the same time, traveling towards Salem. The car leaving Salem averages 10 miles per hour more than the other and they meet after 1 hour and 36 ...

*April 1, 2013 by Evelyn*

**physics**

A car traveling 30 k/h suddenly speeds up to 60k/h.What can you conclude from this information? (A) There was a change in the potential energy of the car. (B) No work ( in its scientific meaning) was done on the car. (C)The car will take four times longer to come to a complete...

*April 2, 2015 by Cynethia *

**algebra**

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 60 mph and train B at 63 mph. Train A passes a station at 11:10 AM. If train B passes the same station at 11:40 AM, at what time will train B catch up to train A? When will train B ...

*December 9, 2010 by Michelle*

**Physics**

Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 22.0 m/s. At the same time, car 2 is 1.4 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding up with an acceleration of magnitude 3.0 m/s2 ...

*October 3, 2012 by Anonymous*

**physicss**

A car traveling 84 km\h is 150 m behind a truck traveling 67km\h. How long will it take the car to reach the truck?(Second) I'll got the answer and it was 30 second But I really dono how It was solved I need the wayyy;((

*October 16, 2011 by saly*

**Physics**

Need Help with physics! Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 17.0 m/s. At the same time, car 2 is 1.3 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding up with an ...

*October 4, 2012 by Brandon*

**PHYSICS**

A car traveling at a constant velocity of 30.0 m/sec passes an intersection at time t=0. 45 seconds later a second car passes the same intersection and its traveling in the same direction at a constant velocity of 55 m/sec. when does the second car overtake the first car? how ...

*October 16, 2011 by Daniel*

**PHYSICS**

a car traveling at a constant velocity of 30 m/sec passes an intersection at time t=0 45 seconds later a second car passes the same intersection and its traveling in the same direction at a constant velocity of 55 m/sec. when does the second car overtake the first car? how far...

*October 17, 2011 by PHY*

**Calculus, antiderivatives**

A student accelerates from rest at a rate of 3 miles/min^2. How far will the car have traveled at the moment it reaches a velocity of 65 miles/60 min? a(t) = 3 miles/min^2 so v(t) = 3t + k miles/min but when t=0, v=0 so k=0 then v(t)=3t d(t) = 3/2 t^2 + c but when t=0 d, the ...

*April 5, 2007 by Andrea*

**physics**

If a car moving at 76.0 mph takes 500 ft to stop with uniform acceleration after its brakes are applied, how far will it take to stop under the same conditions if its initial velocity is 38.0 mph?.

*January 24, 2011 by MEL B*

**math**

The stopping distance D of a car after the brakes have been applied varies directly as the square of the speed s. A certain car traveling at 70 mi/h can stop in 343 ft. What is the maximum speed it can be traveling if it needs to stop in 160 ft?

*February 26, 2013 by El*

**physics**

A 250 kg car starting from rest is pushed 30m. When the car reaches 30m, it’s traveling at a speed of 12m/s and it encounters 52N of friction. What is the acceleration of the car and what is the force of the push on the car?

*December 1, 2010 by Alyssa*

**physics**

a 2250 kg car is traveling at 20 m/s to the west. the force required to stop the car at 7890 N to the east. How long will it take the car to stop? How far would the car move before stopping?

*February 25, 2014 by Karen*

**physics**

A delivery truck with a mass of 1700 kg is stopped in the street w/o its brakes on, when a small car hits it from behind. The car has a mass of 650 kg, and is traveling at 3.7m/s immediately before it hits the truck. Both the car and the truck have good bumpers, so assume the ...

*November 10, 2010 by aok*

**physics **

A car is traveling at 95km/hr. the driver steps on the brakes and the car comes to a stop in 60m. What is the car's deceleration?

*September 5, 2013 by Grace*

**Math**

A car is going 50mi/h after 5s. The car is traveling 30mi/h about how long does it take the car to stop

*August 9, 2014 by Carmen*

**math**

If a car is travelling at 35 MPH and rear ends another car, at what rate will the impact be?

*October 22, 2007 by MARY*

**Integrated Algebra **

A Japanese bullet train leaves the station tra traveling west at 164 mph. A pigeon which was resting on the train is startled and starts flying east at 40 mph. After two hours, how far apart are the pigeon and the train?

*April 3, 2012 by DestinyLashea*

**math**

Mary and John are 128 miles apart. A car leaves Mary traveling towards John and another car leaves John at the same time traveling towards Mary. The car leaving Mary averages 10 miles per hour more than the other car and they meet after 1 hour and 36 minutes. What are the ...

*March 20, 2015 by Pater*

**Physics**

The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. 3.) B and C - The car is decelerating ...

*February 5, 2013 by RR*

**Physics**

The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. 3.) B and C - The car is decelerating ...

*February 5, 2013 by RR*

**Science**

A car is traveling at 65 km/hr. The brakes are applied and the car stops in 3 seconds. What is the car's acceleration?

*December 1, 2015 by Lana*

**math**

A cyclist leaves his training base for a morning workout, riding at the rate of 18 mph. One hour later, his support staff leaves the base in a car going 52 mph in the same direction. How long will it take the support staff to catch up with the cyclist once the car leaves the ...

*September 21, 2010 by aaron kennedy*

**physics**

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 259 m, and the car completes the turn in 38.0 s. a)Determine the car's speed.m/s b)What is the magnitude and direction of the ...

*October 18, 2012 by Karrine*

**Math check answer please**

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40mph, B is traveling at 44 mph. Train A passes a station at 820am, train B passes the same station at 850. At what time will train B catch up to train A. My estimate is 924am

*July 8, 2010 by Christy*

**Analytical Mechanics**

A car traveling at 100Km/hr smashes into a concrete abutment. Show that the collision is the equivalent to driving off the top of a ten story building. Allow 4 meter per story and neglect air resistance. Next, find the equivalent vertical height to represent the effect of a ...

*February 8, 2011 by Garrett*

**physics**

a sports car can accelerate from 0 to 60 mph in 3.2s what is the acceleration of the car in m/s^2 what distance would it travel at this time

*July 18, 2016 by steve *

**Math**

Two boats start out from the same dock traveling at 9 mph and 12 mph respectively. The boats travel in slightly different directions and after 20 minutes are 2 miles apart. What is the angle that is formed by the paths of the two boats? I don't know how to set this up please ...

*January 16, 2014 by Cassie*

**physics**

A 1200 kg car is traveling at 45 km/h and hits a 1000 kg car parked on the edge of a 70 m deep canyon. What is the velocity of the two car wreck?

*January 12, 2011 by matt*

**physics**

Car traveling on circular track. Point A is at positive x,y. Point B is at positive x, negative y. A car is traveling around a horizontal circular track with radius r = 220 m as shown. It takes the car t = 51 s to go around the track once. The angle čA = 31° above the x axis, ...

*October 7, 2013 by Anonymous*

**Algebra Applications**

Jacqueline is 115 miles away from Miranda. They are traveling towards each other. If Miranda travels 9 mph faster than Jacqueline and they meet after 5 hours, how fast was each traveling?

*January 24, 2016 by Ashley*

**physics**

the 900 kg car was traveling south and collided with the 2000kg car traveling west. they both got tangled and moved away from the impact point as one mass at 16.0m/s in the direction 24degrees west of south. what was the initial speed of each prior to the collision?

*August 11, 2014 by kristen*

**physics**

a car driving down a road due south at a constant speed of 55 mph. what is the car's acceleration? how do you know

*May 28, 2013 by Anonymous*

**physics**

a car traveling at 43m/s decelerates at a rate of 7.1 m/s squared. how long did it take the car to stop? what distance did the car travel while stopping?

*March 27, 2014 by ben*

**Physics**

A 500 kg car experiences a frictional force of 3208 N while turning, if the car is traveling around a turn of radius 16 m what is the velocity of the car?

*January 15, 2015 by Brooke*

**Physics**

A 500 kg car experiences a frictional force of 3080 N while turning, if the car is traveling around a turn of radius 17 m what is the velocity of the car?

*January 20, 2015 by Brooke*

**Dynamics**

During a high-speed chase, a 2400-lb sports car traveling at a speed of 100 mi/h just loses contact with the road as it reaches the crest A of a hill. a) Determine the radius of curvature r of the vertical profile of the road at A. b) Using the value of r found in a part a), ...

*March 24, 2011 by Sarah*

**Physics**

A motorcycle is following a car that is traveling at constant speed on a straight highway. Initially, the car and the motorcycle are both traveling at the same speed of 19.0m/s , and the distance between them is 52.0m . After t1 = 5.00s , the motorcycle starts to accelerate at...

*January 24, 2015 by Anonymous*

**Physics**

A motorcycle is following a car that is traveling at constant speed on a straight highway. Initially, the car and the motorcycle are both traveling at the same speed of 19.0m/s , and the distance between them is 52.0m . After t1 = 5.00s , the motorcycle starts to accelerate at...

*January 24, 2015 by Anonymous*

**algera**

The fuel efficiency for a certain midsize car is given by E(v) = −0.018v^2 + 1.440v + 3.9 where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the nearest mile per hour...

*November 4, 2014 by Nate*

**ALGEBRA-MAT117**

Trains A & B are traveling if the same direction on parallel tracks. Train A is traveling at 100 miles an hour and Train B is traveling at 110 mph . Train A passes a station at 1:15 pm If Train B passes the same station at 1:45 pm what time will Train B catch up with Train A?

*April 30, 2009 by shauna*

**math(trig)**

1) A 6-ft propeller turns at 1200 revolutions per minute. Compare the angular velocity of the tip with the angular velocity at a point 10 in. from its center. 2) What is the angular velocity of a point on the tread of a 15-in. diameter tire on a car traveling 55 mph?

*December 6, 2010 by confused*

**math**

if car one is traveling at 45miles per hr in one direction. How fast is car no 2 has to go from stoped state to catch up with car one after 15 miles assuming car 2 can go from 0-60 in 5 sec.

*November 12, 2012 by gus*

**Science**

A car weighing 24,500 Newtons is traveling east and travels a distance of 100 meters in 20 seconds. What is the car's mass? What is the car's kinetic energy?

*April 12, 2013 by Lele Reynolds*

**physics--please help**

You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which move with a speed of 340 m/s.The frequency with which the waves strike the hill is 254.7Hz and the frequency of the reflected sound waves you hear 271.2...

*April 1, 2012 by sara*

**physics--please help**

You are traveling in a car toward a hill at a speed of 40.8 mph. The car's horn emits sound waves of frequency 243 Hz, which move with a speed of 340 m/s.The frequency with which the waves strike the hill is 254.7Hz and the frequency of the reflected sound waves you hear 271.2...

*April 1, 2012 by sara*

**physics**

A car traveling 50 m/s has tires tires that with radii of 0.25 m. The driver of the car hits the brakes and brings the car to a stop in 5 seconds. What is the angular acceleration of the tires on the car?

*April 25, 2011 by bejay*

**physics**

Two cars are traveling at the same constant speed v. Car A is moving along a straight section of the road, while B is rounding a circular turn. Which statement is true about the acceleration of the cars? a.) acceleration of both cars is zero b.) car A is accelerating but car B...

*October 19, 2010 by jo*

**Physics**

An unmarked police car traveling a constant 90 km/h is passed by a speeder traveling 128 km/h. Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.80 m/s2 , how much time passes after the police car is ...

*September 6, 2015 by Anonymous*

**Help again...Math!!**

Two cars leave town going in the same direction. One travels 55 mph and the other travels 65 mph How long will it take before they are 180 miles apart? Hint: We do know that one car is 180 miles ahead of the other, so the slow car's distance can be represented by " d " and the...

*November 15, 2006 by Jessica*

**carrol high school**

A car brakes from 60 mph to a full stop in 4 seconds. Find the accelerayion of the car during this interval

*September 8, 2010 by physics*

**physics**

A car with good tires on a dry road can decelerate at about 5.00m/s^2 when braking. If the car is traveling at 34.0m/s, how long does it take the car to stop under these conditions?

*June 14, 2011 by Rebecca*

**Algebra**

car a leaves phoenix heading north at a constant speed of 40mph car b leaves two hours later and follows car a at a constant speed of 54 mph how many hours does it take car b to catch up to car a? algebra

*June 29, 2016 by Anonymous*

**college physics**

Imagine that your car can travel 25 mi on 1 gal of gas when traveling on a level road at 55mi/h. Estimate your gas mileage while traveling at 55 mi/h up an incline that gains 3m in elevation for every 100 m one goes forward along the incline. Assume that your car has a mass of...

*October 11, 2010 by Tommy*

**Physics**

A car accelarates from 40 mph to 60mph in 2.20 sec. determine the car's accelaration in gs. my answer is .911g Determine how far the car went during that 2.20 sec interval. 41.6 m

*February 3, 2010 by Gweedo8*

**College Physics**

suppose the two cars are headed in the same direction. A 1200kg car travels at 65 mph and a 1000kg car travels at 75mph. The faster car rear-ends the slower car and their bumpers catch so that they continue moving after the collision at the same speed. Use the concepts above ...

*March 22, 2012 by Anonymous*

**physics**

A sports car, traveling 30 m/s, is 220 meters behind a truck. If the truck is traveling 22 m/s, how much time until the sports car passes the truck.

*September 16, 2015 by Emma*

**math**

Two professional drag racers are speeding down a 1/4-mile track. If the lead driver is traveling 1.738 feet for every 1.670 feet that the trailing car travels, and if the trailing car is going 198 miles per hour, how fast in miles per hour is the lead car traveling?

*October 13, 2009 by Bob*

**physics**

A jetliner is traveling east from Seattle to Chicago, a distance of 1,750 miles. The jetliner travels at an average air speed of 620 mph relative to the air. At the jetliner's altitude, the wind is blowing 46 mph to the east. How long does the journey take?

*June 15, 2015 by alex*

**Algebra**

The fuel efficiency for a certain midsize car is given by E(v) = −0.017v^ + 1.462v + 3.5 where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the nearest mile per hour. ...

*December 2, 2014 by Anonymous*

**Physics**

A car with a total mass of 1800kg (including passengers) is driving down a washboard road with bumps spaced 5.0m apart. The ride is roughest—that is, the car bounces up and down with the maximum amplitude—when the car is traveling at 6.1 m/s.What is the spring constant of the ...

*April 12, 2015 by Anonymous*

** computer programing**

Car A, with a mass of 1250 kg, is traveling at 30 m/s to the east. A truck with mass of 2000 kg, traveling to the west at 25 m/s. An inelastic collision occurred, not sticking together, the car goes off 10 m/s to the west. What is the resulting velocity of the truck?

*April 12, 2013 by Amandos Leonard*

**Physics**

The driver of a 1350 kg car, initially traveling at 10.6 m/s, applies the brakes, bringing the car to rest in a distance of 15.0 m. Find the net work done on the car. Not sure how to set this problem up.

*October 5, 2011 by Help*

**physics**

you are traveling in your car at a velocity of 24.0 m/s east when you slam on your brakes. The force of friction on your car tires is 1.80x10^4 N. If the mass of you and your car is 1.50x10^3 kg, how far do you skid before stopping?

*October 22, 2011 by Anonymous*

**math**

Two trains are traveling the same direction, train a is going 60 mph and train b is going 70 mph, after one hour how long will it take train a to reach the point train b was at the hour marker.

*September 2, 2012 by kyle*