Sunday

April 20, 2014

April 20, 2014

Number of results: 229

**physics**

A runner training for a race times 400 meter laps. Lap 1 60sec, Lap 2 57sec, Lap 3 55sec, Lap 4 53sec. What is the average velocity in meters per second? a. 0.563 b. 7.1 c. 14.2 d. 56.25
*Tuesday, February 23, 2010 at 5:19pm by sadaf*

**Physics**

A runner covers one lap of a circular track 40.0 in diameter in 63.3 . For that lap, what was her average velocity? If she covered the first half-lap in 28.6 , what were her average velocity for that half-lap?
*Wednesday, February 6, 2013 at 8:51pm by Anonymous*

**physics**

A runner training for a race times 400 meter laps. Lap 1 60sec, Lap 2 57sec, Lap 3 55sec, Lap 4 53sec. What is the average velocity in meters per second? a. 0.563 b. 7.1 c. 14.2 d. 56.25 please help me, I using the average velocity formula but still i get it wrong
*Friday, February 26, 2010 at 11:20am by mary1111*

**science**

a runner training for a race times her 400 meter laps around a track. her times are lap 1 60 seconds, lap 2 57 seconds, lap 3 55 seconds and lap 4 53 seconds. what is her avaerage velocity in meters per second (m/s)?
*Thursday, June 9, 2011 at 8:15pm by Quetta*

**math**

jamie ran two laps around a track in 99 seconds. how long did it take him to run each lap if he ran the first lap 8.5m/s and the second at 8.0m/s? Let t be the first lap time and L be the length of one lap. 8.5 m/s * t = L 8 m/s * (99-t) = L These two equations in two unknowns...
*Tuesday, November 28, 2006 at 10:01pm by jean*

**Physics**

A runner covers one lap of a circular track 40.0 m in diameter in 62.5s (a) for that lap what were her average speed and average velocity? (b) if she covered the first half lap in 28.7 s, what were her average speed and average velocity for that half lap?
*Wednesday, June 3, 2009 at 12:33pm by Sarah*

**Math**

d1 = (15s/40s) * 1Lap = 15/40=3/8 Lap = Jess' distance. d1 + d2 = i Lap. 3/8 + d2 = 1 d2=1 - 3/8 = 5/8 Lap in 15s.=Mackenzie' distance. T = 15s/(5/8)Lap = 15 * 8/5 = 24 s/Lap. = Mackenzie' speed.
*Wednesday, December 5, 2012 at 11:26am by Henry*

**physics**

A circular racetrack with 250m radius lies in the x-y plane and is centered at the origin. A car rounds the track counterclockwise starting at the point (250m , 0). Find the total distance traveled after one-quarter lap. Find the total displacement after one-quarter lap. Find ...
*Wednesday, February 8, 2012 at 6:50pm by Tig*

**math**

The team practices in a pool that is 20 meters long. Sam completes a lap in 22.5 seconds. How long will it take Sam to complete a lap in an Olympic-sized competition pool that is 50 meters long if he swims at the same rate in both pools? (A lap consists of swimming from one ...
*Thursday, January 16, 2014 at 5:12pm by Anonymous*

**Math**

if a swimmer swam one lap in 32 seconds and the second lap in 45 seconds how do I calculate to find her total time?
*Wednesday, September 28, 2011 at 3:48pm by Carma*

**Algebra**

Jamie ran two laps around a track in 99 s. How long did it take him to run each lap if he ran the first lap at 8.5 m/s and the second at 8.0 m/s?
*Friday, November 16, 2012 at 2:13am by Kevin*

**Physics**

A bike racer is riding his new bike at Silverstone. The track is 4km long. a) What is his average speed in m/s if he does a lap in 2 minutes? b) What is his velocity after one lap?
*Friday, September 11, 2009 at 3:57pm by Nabiha*

**physics**

A bike racer is riding his new bike at Silverstone. The track is 4km long. a) What is his average speed in m/s if he does a lap in 2 minutes? b) What is his velocity after one lap?
*Friday, September 11, 2009 at 4:52pm by Nabiha*

**Physics**

A race car completes the final lap of a race on a 2-kilometer circular track. At the start of the lap, it crosses the line at 60 meters/second. It completes the lap 28.57 seconds later, crossing the line at 85 meters/second. Calculate the displacement and average acceleration ...
*Friday, June 29, 2012 at 5:02pm by Henry*

**physics**

A race car completes the final lap of a race on a 2-kilometer circular track. At the start of the lap, it crosses the line at 60 meters/second. It completes the lap 28.57 seconds later, crossing the line at 85 meters/second. Calculate the displacement and average acceleration ...
*Wednesday, November 28, 2012 at 5:40pm by alejandra aguinaga*

**physics**

A runner covers one lap of a circular track 40.0 m in diameter in 62.5 s. Suppose initially the runner starts by going in the north direction. Assume the speed is constant for the first half-lap and then constant for the 2nd half-lap. Suppose instead the runner ran these same ...
*Monday, June 4, 2012 at 5:56pm by cody*

**physics **

a racing car completes a lap of a 300 meter circular track in 20 seconds. the car's average speed for the lap is most nearly a)0.0m/s b)10m/s c)15m/s d)20m/s e)31.4m/s
*Monday, September 2, 2013 at 10:00pm by sam*

**math**

Ann and Bob are cycling on a track. Ann completes one lap every 15 seconds, and Bob completes one lap every 18 seconds. When will Ann lap Bob, assuming that they started together?
*Friday, October 26, 2012 at 7:13pm by Christina*

**math please help Ms.Sue**

The team practices in a pool that is 25 meters long. Sam completes a lap in 22.5 seconds. How long will it take Sam to complete a lap in an Olympic-sized competition pool that is 50 meters long if he swims at the same rate in both pools? (A lap consists of swimming from one ...
*Thursday, January 16, 2014 at 5:14pm by Anonymous*

**Math**

Alvin, Calvin and Melvin are running laps around a track. Alvin runs a lap every 4 minutes, Calvin runs a lap every 6 minutes and Melvin runs a lap every 9 minutes. If they start off at the same point, how many minutes will it take before all three of them are back at the ...
*Tuesday, June 11, 2013 at 5:46am by Tom*

**physics**

1 Lap = 2 * 3o m = 60 m. a. d = 60 m/Lap * 30 Laps. = 1800 m. = Distance traveled b. Displacement = 0 because the starting point and end point are the same. c. d. S = d/t = 1800 m/3h = 600 m/h.
*Monday, January 16, 2012 at 4:09pm by Henry*

**math**

sherry ran one lap in 83.86 seconds, while della's time for one lap was 837/8 seconds. which runner had the faster time?
*Monday, October 20, 2008 at 7:24pm by gill*

**Math**

Fred runs a lap every 2 minutes and Mark runs a lap every 2.5 minutes. They start together. How long will it be before they are next to each other again?
*Thursday, January 19, 2012 at 9:30pm by Don*

**Physics**

A running track consists of two straight 88.5m segments and two semicircles of radius 39.0m The distance a runner travels in one complete lap I calculated to be 422 m. How do you find the displacement in x.y of a runner who covers half a lap?
*Tuesday, February 4, 2014 at 12:55am by Marcus *

**math**

To qualify for the race, each driver must complete 2 laps of the track at an average speed of 100 mi/h. Benjamin averages only 75 mi/h on his first lap. How fast must he go on his second lap to qulify for the race?
*Sunday, August 24, 2008 at 10:06am by monica*

**Math**

Three pigs entered a race around a track. Piggly takes 6 minutes to run one lap. Piglet takes 3 minutes to run one lap and it takes Wiggly 5 minutes to run one lap. If all three pigs begin the race at the same time, how many minutes will it take for all three pigs to be at the...
*Tuesday, September 25, 2012 at 12:44pm by Braydon*

**English**

. Identify which one of the following sentences is missing punctuation. Please correct the error and explain why the correction is necessary. a. I woke up when the book slipped from my lap and landed on my foot. b. After the book slid from my lap and landed on my foot I ...
*Saturday, October 15, 2011 at 5:53pm by Aran*

**english**

Identify which one of the following sentences is missing punctuation. Please correct the error and explain why the correction is necessary. a. I woke up when the book slipped from my lap and landed on my foot. b. After the book slid from my lap and landed on my foot I realized...
*Monday, September 24, 2012 at 12:28am by lisa*

**english**

Identify which one of the following sentences is missing punctuation. Please correct the error and explain why the correction is necessary a. I woke up when the book slipped from my lap and landed on my foot. b. After the book slid from my lap and landed on my foot I realized ...
*Friday, October 5, 2012 at 2:49pm by cathy*

**math**

let the distance around the track be d km so the time needed to qualify is 2d/100 his time for the first lap is d/75 hours let his speed for the second lap be r km/h so the time for his second lap is d/r hours total time = d/75 + d/r = (dr+75d)/75 then (dr+75d)/75 = 2d/100 ...
*Sunday, August 24, 2008 at 10:06am by Reiny*

**math**

Malia = 2*Eileen 6=2*Eileen Eileen=3 laps Eileen does half a lap while Malia does 1 lap, so like 6 i think
*Tuesday, October 23, 2012 at 6:48pm by Sam*

**physics**

His speed is 35 mph, but his instantaeous velocity is a vector with 35 mph magnitude and a constantly changing direction. After one complete lap, the AVERAGE velocity is zero because he is back where he started. Your question does not say whether you want the instantaneous or ...
*Friday, January 1, 2010 at 1:31am by drwls*

**Math(algebra)**

One lap around a park is 1/3 of a mile. It takes Andy 1/9 of an hour to walk one lap. What is Andy's unit rate around the park?
*Tuesday, November 14, 2006 at 7:04pm by Anonymous*

**Math**

Pedro and Steve are running laps. Pedro runs a lap in 6 minutes and Steve runs a lap in 8 minutes. If they start at the same time, how many minutes will it be before they meet again at the starting point?
*Tuesday, April 1, 2008 at 11:19pm by Anonymous*

**algebra**

Two runners jog around an oval path at constant rates, but in opposite directions. One runner completes a lap every 10 minutes, and the other does a lap every 12 minutes. How many minutes lapse between consecutive meetings of the runners? Express your answer as a mixed number.
*Tuesday, December 14, 2010 at 6:22pm by Shane*

**math**

two runners jog around an oval path at constant rates, but in opposite directions. One runner completes a lap every 10 minutes, and the other does a lap every 12 minutes. How many minutes elapse between consecutive meetings of the runners?Express your answer as a mixed number.
*Wednesday, December 15, 2010 at 9:54am by Shane*

**algebra**

two runners jog around an oval path at constant rates, but in opposite direstions. one runner completes a lap every 10 minutes, and the other does a lap every 12 minutes. how many minutes elapse between consecutive meetings of the runners? express answer as a mixed number.
*Thursday, December 16, 2010 at 12:03pm by Tom*

**algebra**

Two runners jog around an oval path at constant rates, but in opposite directions. One runner completes a lap every 10 minutes, and the other does a lap every 12 minutes. how many minutes elapse between consecutive meetings of the runners? Express your answer as a mixed number
*Thursday, December 16, 2010 at 10:07pm by mw*

**5th grade**

jose and sara are walking around the track at the same time. jose walks one lap every 8 min. sara walks a lap 6 min.what is the least amount of time they would both have to walk for them to cross the starting point together
*Wednesday, January 7, 2009 at 9:43pm by asdfg*

**math**

In a motorcycle race, one lap of the course is 650 m. At the start of the race, John sets off 4 seconds after Tom does, but John drives his motorcycle 5m/s faster and finishes the lap 2.5 seconds sooner than Tom does. What is the speed at which each of them is driving? What is...
*Monday, January 24, 2011 at 9:17pm by Taylor*

**math**

In a motorcycle race, one lap of the course is 650 m. At the start of the race, John sets off 4 seconds after Tom does, but John drives his motorcycle 5m/s faster and finishes the lap 2.5 seconds sooner than Tom does. What is the speed at which each of them is driving? What is...
*Monday, January 24, 2011 at 9:24pm by Taylor*

**math**

in the formula d=rt the time t varies inversely with the rate r. a student running at 5 mph runs one lap around the school campus in 8 ninutes. if a second student takes 10 minutes to run one lap around the school campus, how fast is she running?
*Tuesday, February 28, 2012 at 5:31pm by Michelle*

**math**

I think we must assume the race track is a circle. Let's work in feet, there are 5280 feet in a mile, since it takes 3 laps to make a mile each lap is 5280/3 or 1760 ft for one lap. So the circumference of the race track is 1760 feet.
*Tuesday, December 17, 2013 at 8:57pm by Reiny*

**Physics**

the outer tire travels 2pi*1.7 = 10.68 m farther than the inside tire Since the radius is .4 m, that's an extra 4.25 revolutions per lap Since a lap takes 20.2 seconds, that's an extra 2pi*4.25 rad/20.2 s = 1.32 rad/s
*Sunday, March 9, 2014 at 4:17pm by Steve*

**Math**

Jess is running around a circular track, one lap every 40 seconds. Mackenzie is also running at a constant speed around the same track, but in the opposite direction. They meet every 15 seconds. How many seconds does it take Mackenzie to do one lap?
*Wednesday, December 5, 2012 at 11:26am by Jane*

**phsyics **

A car races on a circular track of radius r. (a) Write an equation for the car's average speed when it travels a complete lap in time t. (b) The radius of the track is 100 m and the time to complete a lap is 14 s. Show that the average speed around the track is 45 m/s.
*Wednesday, March 19, 2014 at 1:18pm by price *

**physics help please!**

A race car is one lap behind the lead race car when the lead car has 57 laps to go in a race. If the speed of the lead car is 66.2 m/s, what must be the average speed of the second car to catch the lead car just before the end of the race (i.e., right at the ﬁnish line...
*Monday, September 3, 2012 at 7:35pm by Amanda*

**English**

The sprinter were congratulate by ecstatic crowd as they run a victory lap. The ecstatic crowd congratulate the sprinters as the run a victory lap.
*Monday, May 27, 2013 at 2:57pm by Afranko*

**Math**

Bobby swims 3 laps every day during the summer. It takes him 15 seconds to swim from the ladder to the swimming lane, and he swims for a total of 135 seconds. The expression below can be used to find s, the number of seconds it takes Bobby to swim each lap. 135 = 3s + 15 How ...
*Saturday, December 14, 2013 at 10:54pm by Eden S.*

**Math**

Adam can run a lap on a certain circular track in 50 seconds. Grampy Sampy can run a lap on this track in 90 seconds. They start at the same location at the same time and move in the same direction. If they each run at a constant speed, how many seconds will it take before ...
*Wednesday, May 8, 2013 at 2:00am by Nate Williams*

**physics**

Adam can run a lap on a certain circular track in 50 seconds. Grampy Sampy can run a lap on this track in 90 seconds. They start at the same location at the same time and move in the same direction. If they each run at a constant speed, how many seconds will it take before ...
*Monday, May 13, 2013 at 1:14am by kathy wong*

**English**

The sprinters were congratulated by an ecstatic crowd as they ran a victory lap. The sprinter were congratulate by ecstatic crowd as they run a victory lap. Convicted murderer Jonathan Walters was walked to the electric chair at 5 a.m. in the company of the warden. The ...
*Monday, May 27, 2013 at 2:57pm by Afranko*

**math**

Michael and mateo begin running around a circular track from the starting point at the same time. it takes Michael 48 seconds one lap around the track. it takes mateo 60 seconds to complete one lap around the track how many minutes does it take before the two boys will meet at...
*Sunday, December 15, 2013 at 4:02pm by jeffrey*

**English**

Convicted murderer Jonathan Walters was walked to the electric chair at 5 a.m. in the company of the warden. The convicted murderer Jonathan Walters were walked to the electric chamber at 5 a.m by the company of warden. The sprinters were congratulated by an ecstatic crowd as ...
*Monday, May 27, 2013 at 2:57pm by Afranko*

**Physics**

Another problem I need help with. An auto race is held on a circular track. A car completes one lap in a time of 20.1 s, with an average tangential speed of 43.1 m/s. Find the following. The following did not follow. I apologize for that. Here is the entire question. An auto ...
*Wednesday, March 14, 2007 at 10:30pm by Jim*

**physics**

At the Indianapolis 500 time trials, each car makes four consecutive laps, with its overall or average speed determining that car’s place on race day. Each lap covers 2.5 (exact). During a practice run, cautiously and gradually taking his car faster and faster, a driver ...
*Saturday, September 29, 2012 at 8:05pm by sammy*

**math**

What is the distance for a lap?
*Tuesday, February 28, 2012 at 5:31pm by PsyDAG*

**math**

How long is each lap?
*Friday, August 31, 2012 at 11:16am by Ms. Sue*

**Math - Probability**

How far is a lap?
*Monday, July 9, 2012 at 9:49pm by Reiny*

**Maths**

A cyclist rides one lap of a circular track at a constant speed so that the riders distance, d meters, from the starting point at any time, t seconds, after starting is: d= (50) - ( 50cos x (pi)t/30, find: (a) the time taken to complete one lap (b) the radius of the track (c) ...
*Thursday, June 21, 2012 at 1:32pm by arif*

**math**

(4.5/3) * 4 = 6 That is, the time per lap times the # of laps
*Thursday, January 10, 2013 at 2:44pm by Steve*

**Physics**

Can you divide the circumference by the lap time? That will be the average speed.
*Thursday, October 14, 2010 at 1:14am by drwls*

**computers ( basics)**

thanks sra i have a lap top my keys did not do this before
*Saturday, August 16, 2008 at 9:32am by Lea*

**math 10c**

one lap in the swimming pool is 50m. how many yards is that!
*Thursday, May 23, 2013 at 10:15am by charlene*

**Math - Probability**

One lap is 2.5 miles. Sorry, meant to include that before.
*Monday, July 9, 2012 at 9:49pm by Lindsey*

**math**

how do I figure the circumference of race track that takes 3 lap to make a mile?
*Tuesday, December 17, 2013 at 8:57pm by devin*

**physics**

a guy walks one lap at 35 miles per hour, what is his velocity?
*Friday, January 1, 2010 at 1:31am by carol*

**math**

ANGULAR SPEED OF A RACE CAR. A race car is driven around a circular track at a constant speed of 180miles per hour. If the diameter of the track is 1/2mile, what is the angular speed of the car? Express your answer in revolutions per hour(which is equivalent to laps per hour) ...
*Wednesday, June 13, 2007 at 8:14pm by michelle*

**physics**

What is the magnitude of the displacement of a car that travels half a lap along a circle that has a radius of 170m ?
*Tuesday, September 14, 2010 at 1:41pm by Taisiya*

**science**

A runner completes one full lap around a 400 meter track. What is her displacement?
*Friday, August 12, 2011 at 10:01pm by abu*

**english**

b.After the book slid from my lap and landed on my foot, I realized that I had fallen asleep.
*Monday, September 24, 2012 at 12:28am by aggie*

**english**

b: After the book slid from my lap and landed on my foot, I realized that I had fallen asleep.
*Friday, October 5, 2012 at 2:49pm by Steve*

**Math**

32+45x=Total time Assuming for each lap she does after the initial one is 45 seconds each.
*Wednesday, September 28, 2011 at 3:48pm by Anonymous*

**math**

sorry, my lap top is being stupid, no, i can use the calculator, but i need to show how i got my answer.
*Wednesday, February 15, 2012 at 9:28pm by victor*

**psychology**

26. Emily and her mother have entered a new place. There are toys on the floor to play with, but no one else is in the room. After a few months on her mothers lap, Emily begins to move toward the toys and is soon playing happily while her mother reads a magazine. When a ...
*Thursday, July 25, 2013 at 6:41pm by Katherine*

**English II**

Read the following poem and answer the question that follows. "I Like to See it Lap the Miles" by Emily Dickinson I like to see it lap the miles, And lick the valleys up, And stop to feed itself at tanks; And then, prodigious, step Around a pile of mountains, And, supercilious...
*Tuesday, November 12, 2013 at 2:47pm by Laura*

**physics**

A bug completes one lap along the edge of a circular planter of radius 14.4 cm in 12.94 s.
*Thursday, September 20, 2012 at 11:52am by django*

**English**

the first one doesn't need any puncuation. After the book slid from my lap and landed on my foot; I realized that I had fallen asleep.
*Saturday, October 15, 2011 at 5:53pm by Aran*

**Physics**

An auto race is held on a circular track. A car completes one lap in a time of 19.2 s, with an average tangential speed of 39.8 m/s
*Wednesday, April 11, 2012 at 10:00pm by Loweri*

**math 2**

a typical lap around a track in the united states has a length of 440 yards. how many laps would need to be completed to run a mile?
*Wednesday, February 12, 2014 at 5:56pm by Jenny plus*

**math**

Laps: 6 + 8 = 14 Dives: 9 + 4 = 13 They did one lap more than dives.
*Thursday, November 1, 2012 at 8:14pm by Ms. Sue*

**spnaish Sra Mcguin**

i just got a new lap top and I am setting up my im and stuff this afternoon - hope your hand is feeling better
*Saturday, February 9, 2008 at 11:51am by sam*

**spnaish Sra Mcguin**

i just got a new lap top and I am setting up my im and stuff this afternoon - hope your hand is feeling better
*Saturday, February 9, 2008 at 11:52am by sam*

**physics**

a cyclist completes a lap around a circular track at a speed of 10m/s in 40s what is the displacement of the cyclist
*Saturday, November 24, 2012 at 9:31pm by ivan h*

**physics**

A figure skater is warming up on the rink. She does a lap of a 100m rink. She completes the laps in 3 minutes. What was her speed?
*Monday, September 19, 2011 at 9:11pm by dave*

**math**

That doesn't make sense when it only took 56 seconds to swim a lap in a 100-meter pool. How did you get 2300? Please post your work so I can see what you did wrong.
*Thursday, January 16, 2014 at 5:12pm by Ms. Sue*

**physics**

a bike racer is riding on his new bike at silverstone. The track is 4km long. What is his average velocity over one lap?
*Wednesday, January 27, 2010 at 2:15pm by Lucy*

**math**

One lap is down and back, for 100 m. 500 m is 5 times as long as 100 meters, so it will take 5 * 1:35 = 5:165 = 7:45
*Thursday, January 16, 2014 at 6:12pm by Steve*

**science**

if 4 cars were going 100m the entire time what happens to speed,velocity and accelerationas one car completes one full lap
*Thursday, January 23, 2014 at 12:40pm by ben*

**Math**

400 meters/lap x 12 laps/day x 14 days is the total number of meters in two weeks. Divide that by 1000 for kilometers
*Tuesday, August 2, 2011 at 11:35pm by drwls*

**spanish**

well good directions buuut my computer is retarded and wont go on num lock for some reason... maybe its just me. my computer is a lap top. hp pavilion.
*Tuesday, September 7, 2010 at 1:23pm by whitney*

**Physics**

A runner with mass 100 kg jogs around a circular track with circumference 1 km. If he does one lap in 6 min, what is his angular momentum about the center of the track?
*Friday, February 4, 2011 at 4:38am by Angular Momentum*

**Physics**

A bug completes one lap along the edge of a circular planter of radius 22.4 cm in 16.45 s. How fast was it traveling? Answer in units of cm/s.
*Sunday, September 9, 2012 at 10:02pm by Jess*

**geometry and measurement**

A pool designed for lap swimming is rectangular in shape with a uniform depth of 4.5 feet. If the pool is enlarged so that it holds twice as much water, which of the following statements could be true?
*Wednesday, February 6, 2013 at 4:29pm by dave*

**math!!!!**

One lap around the track is equal to 1/8 of a mile. A horse ran a distance of 9 laps in 2 minutes and 30 seconds. What was the horse's average speed in miles per minute?
*Sunday, February 9, 2014 at 10:41am by Lidia*

**math**

There is a lap swimming pool is a rectangle with the depth of 4.5 feet. If the water is doubled is it the width, length, and depth doubled?
*Sunday, March 4, 2012 at 9:07pm by Anonymous*

**Algebra**

If each lap in a swimming pool is 100 meters long how many laps does it take to go a mile. I know there are 1609.344 meters in a mile, but what do I do from there?
*Wednesday, October 14, 2009 at 9:32pm by Tyler*

**algebra**

keisha told her swim coach that she would swim at least half a mile. If one lap is 50 yards, what is the fewest number of laps she must swim?
*Wednesday, October 15, 2008 at 10:17pm by nikki*

**physics**

A 625-kg racing car completes one lap in 14.3 s around a circular track with a radius of 55.0 m. The car moves at constant speed. (a) What is the acceleration of the car?
*Tuesday, October 26, 2010 at 9:36pm by rachel*

**physics**

A 615 kg racing car completes one lap in 14.3 s around a circular track with a radius of 40.0 m. The car moves at constant speed. (a) What is the acceleration of the car?
*Tuesday, October 26, 2010 at 9:36pm by matt*