Thursday

April 17, 2014

April 17, 2014

Number of results: 49,938

**physics**

An airplane travels 2800 km at a speed of 700 km/h, decreases its speed to 500 km/h for the next 1500 km and travels the last 1000 km at a speed of 400 km/hr. Find the average speed of the plane for the trip.
*Tuesday, September 13, 2011 at 7:14pm by nikita*

**physics**

A car travels 0.90 km at an average speed of 84.8 km/h and then 0.97 km at an average speed of 41.6 km/h. What is the car's average speed during the 1.87 km interval?
*Friday, January 15, 2010 at 9:55pm by Kim*

**Physics**

A car travels at an average speed of 83.2 km/h for 1.00 h and then at an average speed of 42.4 km/h during a second hour. What is the car's average speed during the 2.00 h interval? A car travels 0.98 km at an average speed of 83.2 km/h and then 0.99 km at an average speed of ...
*Wednesday, February 24, 2010 at 1:44pm by Delilah*

**science**

See if you can find help among the following links: http://search.yahoo.com/search?fr=mcafee&p=What+was+the+average+speed+in+km%2Fh+of+a+car+that+travels+400.0+km+in+4.5+h%3F Sra
*Sunday, January 16, 2011 at 1:37pm by SraJMcGin*

**science**

What was the average speed in km/h of a car that travels 400.0 km in 4.5 h?
*Sunday, January 16, 2011 at 1:37pm by Anonymous*

**Physical Science**

What was the average speed in km/h of a car that travels 400.0 km in 4.5h?
*Saturday, March 6, 2010 at 6:08pm by Julie*

**Maths**

Any help with the following would be greatly appreciated. I don't understand how to use the information given to create the equation. 1) A car travels between A and B at an average speed of 60 km/h. If the car increased its average speed to 100 km/h it would take 10 minutes ...
*Wednesday, April 21, 2010 at 8:57am by Sindy*

**physics**

Please help!!! A car travels 90.0 minutes on the highway. For the first 36.6 minutes it travels 76.5 km/h. It maintains 95.1 km/h for the remainder of the trip. What was the average speed of the vehicle in km/h?
*Thursday, October 4, 2012 at 9:00pm by Victoria*

**maths**

If a car travels for a distance of 16 km at an average speed of 50 km/h and then for a distance of 52 km at an average speed of 80 km/h, what is the total time for the journey in minutes, to the nearest minute?
*Tuesday, December 14, 2010 at 11:43am by Suzi-j*

**pyramids**

a car travels 35 km in the first 20 minutes, 43 km in the second 30 minutes and 19 km in the last 18 minutes of a trip. what is the average speed in Km/mn?
*Saturday, January 8, 2011 at 5:33pm by Eloise*

**PHYSICS**

An odometer in a car has a reading of 50 km at the beginning of a trip and a reading of 125 km half an hour later. What is the average speed of the car? A. 3.75 km/h B. 62.5 km/h C. 1250 km/h D. 250 km/h I say it's D.
*Wednesday, July 21, 2010 at 6:48pm by Anonymous*

**physics**

Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 79 km/h, while car B travels at a constant speed of 89 km/h. How far is Car A from school 1.6 h later? Answer in units of km
*Tuesday, September 13, 2011 at 12:19pm by naia*

**Physics**

Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 79 km/h, while car B travels at a constant speed of 89 km/h. How far is Car A from school 2.1 h later? Answer in units of km
*Sunday, January 15, 2012 at 1:34pm by Shannen*

**physics**

Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 78 km/h, while car B travels at a constant speed of 88 km/h. How far is Car A from school 2 h later? Answer in units of km
*Saturday, September 8, 2012 at 5:56pm by Alex*

**PHYSICS**

Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 79 km/h, while car B travels at a constant speed of 89 km/h. How far is Car A from school 1.6 h later? Answer in units of km IT'S NOT ASKING FOR THE ...
*Tuesday, September 13, 2011 at 12:30pm by naia*

**physics**

Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 75 km/h, while gonzalez (gg24935) – HW 02 – wieman – (053305132) 2 car B travels at a constant speed of 89 km/h. How far is Car A from school 3.3 h later? ...
*Wednesday, January 23, 2013 at 8:12pm by gera-pleaseeeee*

**math**

a car travels at an average speed of 100 km/hr. how many km will the car travel in 2 hours, 15 min?
*Wednesday, February 13, 2013 at 6:21pm by Lori*

**Physics**

A car travels up a hill at a constant speed of 33 km/h and returns down the hill at a constant speed of 60 km/h. Calculate the average speed (in km/h) for the round trip.
*Sunday, January 16, 2011 at 2:27pm by Ethan*

**math**

a cyclist travels the 30 km from Town A to Town B at an average speed of 25 km/h and immediately continues the journey to town C, which is a further 60 km away at an average speed of 20 km/h. What is the average speed for the whole journey?
*Friday, November 23, 2012 at 12:01am by Lindsay*

**Physics**

Sally travels by car from one city to another. She drives for 20.0 min at 64.0 km/h, 37.0 min at 43.0 km/h, and 18.0 min at 66.0 km/h, and she spends 10.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. 1 . km/h (b) Determine the total distance ...
*Thursday, January 26, 2012 at 9:19pm by Anonymous*

**Physics**

A car makes a 288 km trip at an average speed of 31.3 km/h. A second car starting 1 h later arrives at their mutual destination at the same time. What was the average speed of the second car for the period that it was in motion? Answer in units of km/h
*Tuesday, October 1, 2013 at 7:57pm by alison*

**ENG102**

Question 1. A car moves 26 km due east then 14 km due north. It then turns along a path running north-east with 15 km, then 17 km due west. If the time for the entire journey is 2 hrs, Find; (a) the car’s average speed in m/s (b) the car’s average velocity in km/h
*Tuesday, May 1, 2012 at 2:41am by DESMOND*

**University of Ghana**

• A car moves 26 km due east then 14 km due north. It then turns along a path running north-west with 15 km, then 17 km due west. If the time for the entire journey is 2 hrs. • Find; • (a) the car’s average speed in m/s • (b) the car’s average velocity in km/h
*Saturday, March 23, 2013 at 7:29am by Daniel*

**Physics**

Sally travels by car from one city to another. She drives for 40.2 min at 80.0 km/h, 12.0 min at 105 km/h, and 45.0 min at 40.0 km/h. She spends 13.7 min eating lunch and buying gas. (a) Determine the total distance traveled in km. (b) Determine the average speed for the trip ...
*Thursday, January 26, 2012 at 9:19pm by Paige*

**Physics**

A car travels 12 km West, 18 km South. What is the total car displacement? The car takes 10 minutes to travel from each initial position to final position. What is the average speed and velocity?
*Wednesday, June 20, 2012 at 4:31am by Helpme*

**Phyics Word Problems**

Could you please check my work and help me with two of the problems. An airplane that flies at 100 km/h with a 10 km/h tailwind travels at 110 km/h relative to the ground. If it instead flies into a 10 km/h headwind, its groundspeed is 100km/h-10km/h = 90 km/h The average ...
*Monday, September 3, 2007 at 11:25pm by Soly*

**phisecs**

A car travels in a stright line at 43 km/h for 1 h and at 65 km/h for 5 h. Find the average velocity in km/h?
*Wednesday, February 19, 2014 at 9:25pm by neon *

**Physics**

Could someone please review my answers and tell me if I am on the right track? Thank you! A student drove to the university from her home and noted that the odometer reading of her car increased by 12.0 km. The trip took 18.0 min. (a) What was her average speed? (b) If the ...
*Friday, August 31, 2012 at 7:31pm by Miaow*

**ENG102**

Question 1. A car moves 26 km due east then 14 km due north. It then turns along a path running north-east with 15 km, then 17 km due west. If the time for the entire journey is 2 hrs, Find; (a) the car’s average speed in m/s (b) the car’s average velocity in km/h . SOLVE THIS...
*Tuesday, May 1, 2012 at 3:47am by DESMOND*

**maths**

If a van travels for a distance of 18 km at an average speed of 75 km/h and then for a distance of 63 km at an average speed of 90 km/h, what is the total time for the journey in minutes, to the nearest minute?
*Saturday, April 7, 2012 at 10:40am by karen*

**physics**

Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 70 km/h, while car B travels at a constant speed of 88 km/h.How far is Car A from school 2.1 h later?
*Monday, September 10, 2012 at 10:25am by mia*

**physics**

wo cars approach each other on a straight, level highway. Car A travels at 60 km/h and car B at 80 km/h. The driver of car B sees car A approaching at a speed of ________. Two cars approach each other on a straight, level highway. Car A travels at 60 and car B at 80 . The ...
*Friday, February 7, 2014 at 12:44am by beti*

**science**

a car travels a distance of 20 km in 6 minutes calculate the speed in 1. km min 2. m/s 3.km/h 4.cm/s
*Wednesday, June 19, 2013 at 9:05am by sneh*

**physics**

Sally travels by car from one city to another. She drives for 30.0 min at 80 km/h, 12 min at 105 km/h, and 45 min at 40 km/h. She spends 13.0 min eating lunch and buying gas. what the average speed for the trip?
*Monday, October 11, 2010 at 1:52pm by Anonymous*

**physics**

A car travels up a hill at a constant speed of 32 km/h and returns down the hill at a constant speed of 61 km/h. Calculate the average speed and the answer is not 46.5
*Monday, September 19, 2011 at 4:10pm by Ann2793*

**physics**

A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.
*Thursday, September 22, 2011 at 9:16pm by Jonoathan*

**physics**

A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.
*Thursday, September 22, 2011 at 9:16pm by Jonoathan*

**physics**

A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.
*Thursday, September 22, 2011 at 9:16pm by Jonoathan*

**science/math**

A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.
*Saturday, September 24, 2011 at 2:54pm by Jonathan*

**physics**

A car travels in a straight line with an average velocity of 85 km/h for 2.5 h and then with an average velocity of 30 km/h for 1.5 h. (a) What is the total displacement for the 4 h trip? _____________________ km (b) What is the average velocity for the total trip? ...
*Sunday, September 12, 2010 at 2:51pm by MeganErin*

**HURRY........quick post**

Simpson drives his car with an average velocity of 1.2 m/s to the north from the bust stop to the museum entrance. What is your displacement? Look back at the previous question. How much time would Simpson save by increasing his average velocity to 56.0 km/h to the east? A bus...
*Wednesday, September 20, 2006 at 9:13am by anonymous*

**PHYSICS**

An odometer in a car has a reading of 50 km at the beginning of a trip and a reading of 125 km half an hour later. What is the average speed of the car? A. 3.75 km/h B. 62.5 km/h C. 1250 km/h D. 250 km/h The only way to find the average speed is to divide the total distance by...
*Wednesday, July 21, 2010 at 11:08pm by Anonymous*

**Physics**

ally travels by car from one city to another. She drives for 23.0 min at 80.0 km/h, 31.0 min at 35.0 km/h, and 31.0 min at 19.0 km/h, and she spends 5.0 min eating lunch and buying gas. (a) Determine the average speed for the trip.
*Sunday, November 11, 2012 at 3:00pm by Anonymous*

**Physics**

Car travels up hill at a constant speed of 50 km/h and returns down the hill at a constant speed of 65 km/h. Calculate the avg speed for the round trip in km/h.
*Thursday, September 22, 2011 at 10:13pm by JP*

**physics**

A car travels 1.72 km in the x direction, then turns left 50.4 degrees to the original direction and travels an additional distance of 1.97 km. Calculate the x component of the car's net displacement. Answer in units of km.
*Thursday, August 27, 2009 at 11:48am by bubba*

**Physics**

A car travels 2.69 km in the x-direction, then turns left 57.5◦ to the original direction and travels an additional distance of 3.95 km. Calculate the x component of the car’s net displacement. Let : d1 = 2.69 km, = 57.5◦ , and d2 = 3.95 km. Answer in units of km.
*Tuesday, October 27, 2009 at 6:28pm by Letisha*

**Physics**

Sally travels by car from one city to another. She drives for 25.0 min at 71.0 km/h, 45.0 min at 45.0 km/h, and 43.0 min at 11.0 km/h, and she spends 10.0 min eating lunch and buying gas. What is the average speed for the trip?what is the total distance traveled?
*Tuesday, August 23, 2011 at 6:19pm by Anonymous*

**Physics**

Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 77 km/h, while car B travels at a constant speed of 89 km/h. 1. How long does it take car A to reach a gas station a distance 247 km from the school? ...
*Sunday, September 8, 2013 at 6:45pm by Anonymous*

**Physics**

Sally travels by car from one city to another. She drives for 28.0 min at 63.0 km/h, 50.0 min at 40.0 km/h, and 50.0 min at 43.0 km/h, and she spends 13.0 min eating lunch and buying gas. Find the trip's average speed and total distance traveled...
*Sunday, May 23, 2010 at 8:03pm by Jackie*

**Physics**

A car travels east at 82 km/h for 1.5 h. It then travels 30.0° east of north at 113 km/h for 1.6 h. What is the average velocity for the trip? (Magnitude and Direction)
*Friday, August 28, 2009 at 8:27pm by A*

**Physics**

A bus travels 290 km south along a straight path with an average velocity of 81 km/h to the south. The bus stops for 25 min, then it travels 210 km south with an average velocity of 80 km/h to the south. How Long does it lasts ? Answer in units of h . What is the average ...
*Monday, September 30, 2013 at 11:42am by Thomas*

**physic**

1) if you live 10.0 km from your school and the bus takes 0.53 h to reach the school driving due east, what is the average velocity of the bus? 2) To qualify for the finals in a racing event, a race car must achieve an average speed of 250 km/h on a track with a total length ...
*Wednesday, October 14, 2009 at 6:28pm by Shelby*

**fizik**

i really need the answer quickly 1. Linda travels by car around one city to another with different constant speeds between pairs of cities. She travels for 35 min at 84 km/h, 17 min at 105 km/h and 50 min at 42 km/h and spends 25.0 min eating lunch and buying gas a) Determine ...
*Saturday, February 19, 2011 at 11:40am by alya*

**psychics**

1. (a) A frictionless car of mass 1.5 tonnes travels uphill along a slope at 20º to the horizontal for 0.5 km at 20 km per hour. (i) How much work does the engine do on the car? (ii) What power does the engine supply? (b) The car the rolls back down the hill with the engine ...
*Thursday, May 2, 2013 at 6:15am by Serkhref*

**math**

Ken's average driving speed is 25km/hr faster than Jim's. In the same length of time it takes Ken to drive 279 km, Jim drives only 204 km. What is Ken's average speed? Possible Answers: a) 93 km/hr b) 118 km/hr c) 43 km/hr d) 68 km/hr Let x equal the speed of Jim's car. 279/x...
*Sunday, January 21, 2007 at 12:53pm by bill*

**physics**

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min at 85.0 km/h, 12.0 min at 95 km/h, and 35.0 min at 30.0 km/h, and spends 35.0 min eating lunch and buying gas. Determine the average speed for the ...
*Tuesday, September 13, 2011 at 6:28am by gigi*

**Math**

An airplane has a speed of 400 km/h with no wind. The airplane flies 2140 km with the wind. The airplane can only fly 1860 km against the wind in the same time. If w equals the speed of the wind, which equation would be used to find w? a) 2140/(w+400) = 1860/(w-400) b. 2140/(...
*Tuesday, January 10, 2012 at 9:07pm by Jayson*

**Physics**

A car travels 105 km to the north at 65km/hr and then turns around and travels 25km at 80km/hr. What is the difference between the average speed and the average velocity on this trip?
*Thursday, February 2, 2012 at 9:11pm by Alexis*

**Physics **

A bus travels 270 km south along a straight path with an average velocity of 89 km/h to the south. The bus stops for 25 min, then it travels 250 km south with an average velocity of 68 km/h to the south. How long does the total trip last? Answer in units of h
*Friday, September 9, 2011 at 11:21pm by R.S. *

**Physics**

A bus travels 340 km south along a straight path with an average velocity of 88 km/h to the south. The bus stops for 22 min, then it travels 230 km south with an average velocity of 75 km/h to the south. How long does the total trip last? Answer in units of h
*Thursday, October 4, 2012 at 9:31pm by Diondre*

**physics**

A bus travels 250 km south along a straightpath with an average velocity of 84 km/h to the south. The bus stops for 26 min, then it travels 240 km south with an average velocity of 70 km/h to the south. How long does the total trip last?
*Monday, September 20, 2010 at 5:33pm by Taylor*

**physics**

You drive a car 2.0 km to the gas station, 4.0 km to the shopping mall to let your mother off, and 4.5 km back home. The trip takes 20.0 min. What is your average speed?
*Thursday, October 4, 2012 at 12:40pm by Skylar*

**physics**

A person travels by car from one city to another with different constant speeds between pair of cities. She drives for 38.6 min at 87.2 km/h, 10.3 min at 107.9 km/h, and 45.6 min at 45.7 km/h, and spends 17.9 min eating lunch and buying gas. Find the distance between the ...
*Sunday, October 4, 2009 at 9:32pm by juan*

**Algebra! Help needed!**

I'm having a little trouble with this problem... Please try and walk me through the problem, too: #1. A motorboat leaves a dock and travels at an average speed of 15 mi/h toward an island. The average speed on the return trip is 10 mi/h. How far is the island from the harbor ...
*Thursday, November 20, 2008 at 5:19pm by Celina*

**physics**

what is the speed of a car in km/n if it travels 108 km. in 1 min.?
*Tuesday, June 28, 2011 at 7:53am by junna rose*

**Physics**

please show me how to solve this 1. A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. the bus stops for 24 min. then, it travels 210 km south with an average velocity of 75 km/h to the south a. how long does the total trip last...
*Friday, January 30, 2009 at 11:41am by y912f*

**math 10 pre calculus**

12. An avalanche rescue team travels 8.55 km along a snow-covered trail. For the first section, the trail is flat. The team averages a speed of 2.7 km/h. Then, the terrain becomes mountainous and their average speed is only 1.2 km/h. The one-way trip takes the team 4.0 h. ...
*Friday, December 14, 2012 at 8:36am by Eric*

**physics**

On a 120 km track, a train travels the first 30 km at a uniform speed of 30km/h. How fast must the train travel the next 90 km so as to average 60km\h for the entire trip?
*Thursday, June 3, 2010 at 10:46am by reena*

**Physics**

A car travels 2.06 km in the x-direction, then turns left 70.3 degrees to the original direction and travels an additional distance of 4.23 km. Calculate the x component of the car’s net displacement. Let : d1 = 2.06 km, theta = 70.3 degrees , and d2 = 4.23 km.
*Tuesday, February 1, 2011 at 7:10pm by Samuel*

**PHYSICS**

A race car travels northward on a straight, level track at a constant speed travels 0.760 km in 20.0 s. The return trip over the same track is made in 25.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run? m/s (b) What is the average velocity ...
*Sunday, October 16, 2011 at 7:53pm by Moe*

**physics**

A race car travels northward on a straight, level track at a constant speed travels 0.745 km in 22.0 s. The return trip over the same track is made in 27.0 s. (a) What is the average velocity of the car in m/s for the first leg of the run? m/s (b) What is the average velocity ...
*Sunday, March 3, 2013 at 12:18am by fatimah*

**physics**

A car moves a distance of 200 km. It covers the first half of the distance at speed 40 km/h and second half of the distance by speed v. The average speed is 48 km/h. Find the value of v
*Friday, November 30, 2012 at 6:45am by maihul*

**physics**

A car makes a 60-km trip with an average velocity of 38.5-km/h in a direction due north. The trip consists of three parts. The car moves with a constant velocity of 25 km/h due north for the first 15 km and 62 km/h due north for the next 32 km. With what constant velocity does...
*Friday, September 17, 2010 at 6:09pm by Akruti*

**physical Science**

What was the average speed in km/h of a car that travels 400km in 4-5h?
*Thursday, February 9, 2012 at 7:24am by Joslyn*

**Physics**

If the odometer on the car reads 25.0 km at the beginning of a trip and 65.0 km a half hour later, what is the average speed of the car? (Remember significant digits.)
*Thursday, June 13, 2013 at 9:18am by Isis*

**Physics**

A bus travels 280 km south along a straight path with an average velocity of 88 km/h to the south. The bus stops for 24 min. Then it travels 210 km south with an average velocity of 75 km/h to the south. how long does the total trip last? what is the average velocity for the ...
*Wednesday, September 8, 2010 at 6:08pm by Jasmine*

**physics**

The pronghorn antelope has been observed to travel at an average speed of more than 55 km/hover a distance of 6.0 km. Suppose the antelope runs a distance of 6.0 km in the following manner: it travels 2.0 km in one direction, then turns 90 degree and runs another 4.0 km. ...
*Sunday, September 12, 2010 at 9:42pm by C*

**Physics**

Car A is traveling at a constant speed v A = 130 km /h at a location where the speed limit is 100 km/h. The police officer in car P observes this speed via radar. At the moment when A passes P, the police car be- gins to accelerate at the constant rate of 6 m/s 2 until a speed...
*Sunday, September 9, 2007 at 12:58pm by Anonymous*

**PHYSICS**

A BUS TRAVELS 280 KM SOUTH ALONG A STRAIGHT PATH WITH AN AVERAGE VELOCITY OF 88 KM/H TO THE SOUTH. THE BUS STOPS FOR 24MIN, THEN IT TRAVELS 210 KM SOUTH WITH AN AVERAGE VELOCITY OF 75 KM/H TO THE SOUTH. A. HOW LONG DOES THE TOTAL TRIP LAST? B.WHAT IS THE AVERAGE VELOCITY FOR ...
*Wednesday, September 5, 2007 at 9:48pm by Susie*

**Physical Science**

Question Details Joe Cool drives to see his girlfriend who attends another college. (a) The 144 km trip takes 2.0 h. What was the average speed for the trip? ..... km/h (b) The return trip over the same route takes 3.0 h because of heavy traffic. What is the average speed for ...
*Saturday, March 26, 2011 at 12:39pm by Anonymous*

**Physics**

A bus travels 280 km south along a straight path with an average velocity of 88 km/hr to the south. The bus stops for 24 min, then it travels 210 km south with an average of 75 km/hr to the south. A. How long does the total trip last? B. What is the average velocity for the ...
*Monday, September 10, 2007 at 4:05pm by Lindsay*

**physics**

a student driving a car travels 10.0 km in 30,0 min.What was her average speed?
*Monday, March 12, 2012 at 5:05am by tema*

**math**

a boat travels 4 km upstream and 4 km back. the time for the round trip is 9 hrs. the speed of the stream is 2 km/hr. What is the speed of the boaty in still water?
*Sunday, April 3, 2011 at 3:06pm by Anonymous*

**Math-Algebra**

A car takes 3 hours to travel a distance of 240 km with a speed of 80 km/h while a motorbike can cover the same distance in 4 hours if its travels at a speed of 60 km/h. Explain why the speed and the time it takes for the vehicles to travel a certain distance exhibit an ...
*Wednesday, November 13, 2013 at 4:50am by McKenna Louise*

**Physics**

Two cars pass a school when a stopwatch reads zero. They both travel in the same direction. Car A travels at a constant speed of 98 km/h and Car B travels at 64 km/h. How many meters apart are the two cars when the stopwatch reads 2.0 hours?
*Saturday, February 8, 2014 at 4:23pm by Erin*

**physics**

First case: Total distance = L (km) Time at 40 km/h = 0.1 L/40 Time at 90 km/h = 0.9 L/90 Total time = (.0025+.01)L Average speed = L/(.0125) = 80 km/h Second case: Total trip time = T Distance covered at 40 km/h = 40*0.1T = 4.0 T km Distance travelled at 90 km/h = 90*0.9T = ...
*Wednesday, April 11, 2012 at 2:20am by drwls*

**Math**

Please help me! I don't even know where to start :( my teacher took this question up on friday but i was sick, and we have a test tomorrow! -Car A travels from Barrie to Subuiry at an average speed of 90km/h -Car B travels from Subury to Barrie at an average speed of 80km/h -...
*Sunday, March 7, 2010 at 7:32pm by Dawn*

**physics**

What is your average velocity if you drive a distance of 252.5 km at a speed of 41 km/h, then the same distance at a speed of 60 km/h? Answer in units of km/h
*Thursday, September 27, 2012 at 11:42pm by aaron*

**science**

What is the average speed of a satellite given the following information. 1) The earth's radius = 6000 km 2) The satellite is 900 km from the earth's surface 3) The satellite's orbital period: 2 hours 4) Circumference = 2pr (p = 3.14) A) 6 km/s B) 10 km/s C) 5 km/s D) 8 km/s
*Monday, February 10, 2014 at 9:10pm by Tori*

**Algebra**

I'm having a little trouble with this problem... Please try and walk me through the problem, too: #1. A motorboat leaves a dock and travels at an average speed of 15 mi/h toward an island. The average speed on the return trip is 10 mi/h. How far is the island from the harbor ...
*Thursday, November 20, 2008 at 4:43pm by Celina*

**math**

speed = km/h Car speed = 3 km/3hours = 1 km/1hour = 1 km/h
*Sunday, September 11, 2011 at 1:46pm by Raf*

**distance problem**

A car travels 20 km/h faster than a truck. The car covers 360 km in 3 hours less time than the truck.Find the speed of the truck. (kindly write the solution, thanks alot)
*Monday, December 17, 2012 at 7:20am by HELP HELP MNHS*

**physics**

a plane flys 350 km south along a straight path with an average velocity of 125 km/h to the south. the plane has a 30 minute layover and then travels 220 km south with an average velocity of 115 km/h to the south. what is the average velocity of the trip
*Tuesday, November 13, 2012 at 3:39pm by connor*

**Physics**

A car travels 150 km for two hours east of a starting point, turns around and travels due west 300 km for three hours. What is the car's net velocity for the trip?
*Monday, February 25, 2013 at 12:12pm by Gabby*

**9th grade**

A downhill skier travels down a course at an average speed of 60 km/hr for 2 minutes. How far in km did she ski? convert your answer to meters.
*Friday, January 29, 2010 at 7:09pm by Margaret*

**physics**

Try this. car|--0.100 km--|-------d---------| t r u c k xxxxxx|-------d---------| The truck travels a distance, d km, while the car travels d + 0.100 km. distance = rate x time. The time must be equal so time = distance/rate time for truck = d/75 time for car = (d+0.100)/90 ...
*Saturday, June 20, 2009 at 1:02pm by DrBob222*

**math**

A bus travelling at an average speed of 63km/h left a station at 8.15 a.m. A car later left the same station at 9.00 a.m. and caught up with the bus 10.45 a.m. find the average speed of the car. When the two vehicles met, the bus had travelled 63km/h*2.5h=157.5 km, while the ...
*Saturday, May 26, 2012 at 8:09pm by MathMate*

**Chemistry Last**

Last question: An average person expends ~100 kj to walk 1km. How far will the average car travel by the time it expends the same amount of energy (i.e. 100 kJ) as a person who walked 1 km? Fuel consumption of average car= 8 km L^(-1) Heat of combustion of gasoline= 50 kJ g^(-...
*Sunday, August 29, 2010 at 10:42pm by Amy~*

**physics**

The average speed of the train, from the time deceleration begins until the last car passes, is (80.1 + 16.9)/2 = 48.5 m/s. The train moves 400 m during that time, so it took 0.4 km/48.5 km = 8.247*10^-3 h to leave the crossing. That is 29.7 seconds
*Friday, February 3, 2012 at 2:54am by drwls*

**Physics Problems**

Could you please check my work and help me with a couple. An airplane that flies at 100 km/h with a 10 km/h tailwind travels at 110 km/h relative to the ground. If it instead flies into a 10 km/h headwind, its groundspeed is : 110 km/h /2= 55 km/h The average speed of a horse ...
*Sunday, August 26, 2007 at 8:10pm by Soly*

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