Wednesday

April 16, 2014

April 16, 2014

Number of results: 80,301

**physics**

How long does it take a plane, traveling at a constant speed of 160 m/s, to fly once around a circle whose radius is 3450 m?
*Monday, January 24, 2011 at 8:05pm by lucey*

**physics**

How long does it take a plane, traveling at a constant speed of 166 m/s, to fly once around a circle whose radius is 4000 m?
*Sunday, June 30, 2013 at 10:47pm by Justin S.*

**Physics **

A jet plane has a takeoff speed of Vto=125km/h (34.72 m/s) and it's engines can power it to accelerate with an average acceleration of 5.6 m/s^2. A.) what length of runway will it need to take off safely? B.) suppose it had an available runway length of only 75m. What minimum ...
*Saturday, February 8, 2014 at 10:01pm by Michelle*

**physics**

How long does it take a plane, traveling at a speed of 170 m/s, to fly once around a circle whose radius is 2900 m?
*Saturday, October 23, 2010 at 12:01pm by bill*

**Physics**

How long does it take a plane, traveling at a speed of 170 m/s, to fly once around a circle whose radius is 3500 m?
*Sunday, October 30, 2011 at 6:17pm by Jessi*

**Physics**

a jetliner traveling northward is landing with a speed of 80 m/s. Once the jet touches down, it has 800 m of runway in which to reduce its speed to 10 m/s. (a) Compute the average acceleration (magnitude and direction) of the plane during landing (take the direction of the ...
*Wednesday, December 8, 2010 at 11:21am by Geri*

**physics**

An airplane starts from rest and moves forward with a constant acceleration of 5 m/s2 along a runaway 250 m long. How long does it take the plane to reach a speed of 46.0 m/s?
*Saturday, January 14, 2012 at 5:55pm by tracy*

**college physics**

i need solutions for all this problems...help please.... 1.) an electron moving at a speed of 4x10 power of 6 m/s, shot through a sheet of paper which is 3x10 to power of -5 m thick. the electron energyfrom the sheet with with a speed of 2x10 to the power of 6 m/s. find the a...
*Wednesday, July 29, 2009 at 10:32am by jhenz*

**physics**

A ball starts from rest and accelerates at 0.520 m/s2 while moving down an inclined plane 9.65 m long. When it reaches the bottom, the ball rolls up another plane, where, after moving 14.40 m, it comes to rest. (a) What is the speed of the ball at the bottom of the first plane...
*Saturday, October 10, 2009 at 8:11pm by Jamie*

**physics**

To take off from the ground, an airplane must reach a sufficiently high speed. The velocity required for the takeoff, the takeoff velocity, depends on several factors, including the weight of the aircraft and the wind velocity. Part A: A plane accelerates from rest at a ...
*Tuesday, September 10, 2013 at 11:38pm by JD*

**Algebra 2**

A commercial freight carrier is flying at a constant speed of 400 mi/h and is traveling 4 miles east for every 3 miles north. A private plane is observed to be 210 miles east of the commercial carrier, traveling 12 miles north for every 5 miles west. a. If it is known that the...
*Monday, September 28, 2009 at 10:56am by newt*

**algebra 2**

A commercial freight carrier is flying at a constant speed of 400mi/h and is traveling 4 mi east for every 3 mi north. A private plane is observed to be 210 mi due east to the commercial carrier, traveling 12 mi north for every for 5 mi west. a.If it is known that the two ...
*Sunday, January 2, 2011 at 9:04am by Songthan*

**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*

**Precalculus**

1.A plane takes off at an angle of 6 degrees traveling at the rate of 200 feet/second. If it continues on this flight apth at the same speed, how many minutes will it take to reach a n altitude of 8000 feet? 2. A plane takes off at an angle of 5 degrees. After traveling 1 mile...
*Monday, March 2, 2009 at 12:27pm by Ms. Suzie*

**Physics**

A jetliner, traveling northward, is landing with a speed of 66.5 m/s. Once the jet touches down, it has 766 m of runway in which to reduce its speed to 13.1 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the direction of the ...
*Tuesday, December 13, 2011 at 5:29pm by K*

**Science**

How would you set up the following unifor motion problem... How long will it take the plane to fly 1000 km (i mile=1.61 km) if it is traveling at a constant velocity of 80 km/hr.
*Saturday, April 9, 2011 at 3:13pm by Jack*

**physics**

A jetliner, traveling northward, is landing with a speed of 65.7 m/s. Once the jet touches down, it has 817 m of runway in which to reduce its speed to 5.93 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the direction of the ...
*Friday, January 27, 2012 at 1:49pm by Candy*

**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, dynamics**

Two cars are traveling along a straight road. Car a maintains a constant speed of 89 km/hr and car b maintains a constant speed of 119 km/hr. at t=0 car b is behind 38km from car a. How far will car a travel from t =0 before it is overtaken by car b. how long from t=0 will it ...
*Thursday, January 13, 2011 at 10:39pm by Anonymous*

**Physics**

A particle is traveling in a straight line at a constant speed of 25.4 m/s. Suddenly, a constant force of 12.8 N acts on it, bringing it to a stop in a distance of 58.6 m. How long does it take to stop and what is the mass of the particle? *Don't I need one of those two given ...
*Monday, February 14, 2011 at 11:56pm by Bryce*

**physics**

An airplane needs at least 145 meters of runway to take off. If the plane starts from rest and accelerates uniformly to a take-off speed of 170 km/hr then what is its acceleration in meters/second? How long does it take for the plane to become airborne?
*Thursday, September 22, 2011 at 4:47pm by John*

**PHYSICSS**

A block is projected up a frictionless inclined plane with initial speed v1 = 3.40 m/s. The angle of incline is è = 31.1°. (a) How far up the plane does it go?(m) (b) How long does it take to get there? (s) (c) What is its speed when it gets back to the bottom?(m/s)
*Sunday, October 3, 2010 at 4:51pm by ashley*

**physics**

A block is projected up a frictionless inclined plane with initial speed v0 = 8.42 m/s. The angle of incline is è = 58.4°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
*Saturday, October 9, 2010 at 10:30am by koraile*

**physics**

A block is projected up a frictionless inclined plane with initial speed v0 = 8.42 m/s. The angle of incline is è = 58.4°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
*Saturday, October 9, 2010 at 2:30pm by daisy*

**physics**

A block is projected up a frictionless inclined plane with initial speed v0 = 8.42 m/s. The angle of incline is è = 58.4°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
*Saturday, October 9, 2010 at 4:48pm by katherine*

**physics**

A block is projected up a frictionless inclined plane with initial speed v0 = 8.42 m/s. The angle of incline is è = 58.4°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
*Sunday, October 10, 2010 at 10:51am by Sam*

**physics**

A block is projected up a frictionless inclined plane with initial speed v0 = 1.92 m/s. The angle of incline is è = 12.2°. (a) How far up the plane does it go? (b) How long does it take to get there? (c) What is its speed when it gets back to the bottom?
*Monday, October 11, 2010 at 5:03pm by jessy *

**Algebra I**

"A car is traveling at r speed. A plane is traveling at 5r speed. When will they both reach 200 miles?"
*Monday, May 23, 2011 at 11:07pm by Beth*

**mitx 8.01x Classical Mechanics **

A motorist traveling with constant speed of vc = 17.000 m/s passes a school-crossing corner, where the speed limit is 10 m/s. Just as the motorist passes, a police officer on a motorcycle stopped at the corner starts off in pursuit. The officer accelerates from rest at am = 3....
*Tuesday, September 10, 2013 at 7:16pm by youlife*

**math**

an air plane takes off with an elevation of 27degrees. what is the total land distance the plane reaches a cruising altitude of 875 feet ? if the plane is traveling at a steady speed of 651 feet per hour, how much time will it take the plane to reach its cruising distance? ...
*Thursday, February 13, 2014 at 5:56pm by molly*

**uniform motion science**

How would you set up the following unifor motion problem... How long will it take the plane to fly 1000 km (i mile=1.61 km) if it is traveling at a constant velocity of 80 km/hr.
*Sunday, April 10, 2011 at 8:26pm by Jack*

**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), ...
*Thursday, March 24, 2011 at 11:22am by Sarah*

**physics **

A speeder traveling at a constant speed of 125km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (8.0km/h)/s until it reaches its maximum speed of 190km/h, which it maintains until it catches up with the speeder. (a) How long does it take...
*Tuesday, August 27, 2013 at 7:16pm by alex *

**physics**

1. An object traveling at a constant speed of 22m/s begins to experience a force of 15N in the opposite direction of its motion. (Hint given: Start by finding objects acceleration) a. How long will it take for the 8kg object to come to a complete stop once it experiences the ...
*Tuesday, June 21, 2011 at 8:22pm by molly*

**algebra**

one plane left an airport at 11:30 am. A second plane, traveling at 320 mph left the same airport at 1:00 pm and overtook the first plane at 4:30 pm. At what speed was the first plane traveling?
*Sunday, October 17, 2010 at 10:50am by jose*

**physics**

A steam catapult launches a jet aircraft (from rest) from the aircraft carrier John C. Stennis, giving it a speed of 160 mi/h in 2.40 s. Find the average acceleration of the plane. Assuming that the acceleration is constant, find the distance the plane moves.
*Thursday, September 16, 2010 at 12:34am by J*

**Physics**

A speeder traveling at a constant speed of 102 km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (9 km/h)/s until it reaches its maximum speed of 146 km/h, which it maintains until it catches up with the speeder. How long does it take ...
*Saturday, January 28, 2012 at 11:49pm by Anon*

**Calculus**

A fully plane has a constant acceleration while moving down a runaway. the plane requires .7 mile of runaway and a speed of 160 miles per hour in order to lift off. what is the planes accelearation? i need the formula cause the one i have doesnt work cause i need time
*Tuesday, December 8, 2009 at 11:43pm by Nancy*

**Physics**

A 25kg crate is sitting at the bottom of an inclined plane. The inclined plane 12m long meets the horizontal at an angle of 15 degrees and has a coefficient of friction of 0.55. A force is applied to the crate so as to slide the crate up the incline at a constant speed. What ...
*Saturday, February 25, 2012 at 9:02pm by Rob*

**physics**

a crate weighing 3500 newton down an inclined plane at constant speed. The plane is 7.5 meter long. Its height is 3.0 meter. What is the coefficient of sliding friction between the crate and the inclined plane?
*Monday, December 5, 2011 at 10:52pm by xander*

**ALGEBRA 2**

A plane takes off from an aiport and flies east at a speed of 350 mi/h. Ten minutes later, a second plane takes off from the same airport and flies east at a higher altitude at a speed of 400 mi/h. How long does it take the second plane to overtake the first plane? I have ...
*Sunday, August 16, 2009 at 4:40pm by Emily*

**physics**

A jet plane is traveling at a constant speed in a straight line in level speed. What does this tell you about the forces acting on it, what forces are acting on it .
*Sunday, March 25, 2012 at 12:40pm by Melissa*

**calculus**

shortly after taking off, a plane is climbing at an angle of 30° and traveling at a constant speed of 640 ft/sec as it passes over a ground radar tracking station. At that instant of time, the altitude of the plane is 1000 ft. How fast is the distance between the plane and the...
*Tuesday, October 18, 2011 at 8:35pm by Anonymous*

**Physics**

A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 15.5 m long. The bowler hears the sound of the ball hitting the pins 2.50 s after the ball is released from his hands. What is the speed of the ball? The speed of sound is 340 m/s. How do i...
*Friday, October 15, 2010 at 11:21pm by Lynmarie*

**physics**

An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the car...
*Sunday, April 8, 2012 at 7:10pm by kelly*

**physics**

An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the car...
*Sunday, April 8, 2012 at 7:37pm by kelly*

**physics**

An automobile traveling 95 overtakes a 1.10--long train traveling in the same direction on a track parallel to the road. Q1: If the train's speed is 75 , how long does it take the car to pass it Q2:How far will the car have traveled in this time? Q3:What is the time if the car...
*Sunday, April 8, 2012 at 8:56pm by kelly*

**math**

At an airport, a flight controller was in a tower 40m above the ground. When she first observed a plane it was at an angle of elevation of 12 (degrees) from her line of sight and flying at a constant altitude (height) The plane had a constant speed of 360km/h Eight seconds ...
*Sunday, May 19, 2013 at 8:06am by alice*

**Physics**

A plane flies horizontally at constant ground speed v=720km/h. The pilot is informed by an air traffic controller that he must immediately change his direction of flight while keeping the same altitude. The pilot performs a turning maneuver by rolling the plane to a banked ...
*Tuesday, April 2, 2013 at 9:00am by Crow*

**maths**

A passenger plane and a jest leave at the same time from the same airport, traveling in opposite directions. The jet travels at twice the speed of the passenger plane. They are 2400 miles apart in 4 hours. Find the speed of the passenger plane and jet.
*Tuesday, November 6, 2007 at 11:54pm by gf*

**physics**

Nevermind! I got it: (a) What is the speed of the ball at the bottom of the first plane? v2 = vi2 + 2 a (x - xi) (b) How long doe is take to roll down the first plane? v = vi + a t (c) What is the acceleration along the second plane? v2 = vi2 + 2 a (x - xi) (d) What is the ...
*Saturday, October 10, 2009 at 8:11pm by Jamie*

**Algebra**

If the plane's air speed is s, and the wind speed is w 800/(s+w) = 5 s+w = 160 800/(s-w) = 8 s-w = 100 2s=260 s=130 so, w=30 800/160 = 5 800/100 = 8
*Monday, November 7, 2011 at 9:09pm by Steve*

**Velocity and Displacement**

A plane is sitting on a runway, awaiting takeoff. On an adjacent parallel runway, another plane lands and passes the stationary plane at a speed of 47 m/s. The arriving plane has a length of 32 m. By looking out the window (very narrow), a passenger on the stationary plane can...
*Thursday, September 1, 2011 at 4:26pm by Fainah*

**Physics**

The Navy wants a new airplane launcher for their aircraft carriers that is basically a large spring and your job is to determine the necessary spring constant. The launcher pushes the plane for a short distance along a much longer runway. During that same time, the plane's jet...
*Tuesday, March 26, 2013 at 7:42pm by Brandon*

**algebra 1**

A passenger plane and a jet leave att the same time from the same airport,traveling in opposite directions. The jet travels at twice the speed of the passenger plane. they are 2400 mi apart in 4 hours. Find the speed of the passenger plane and jet.
*Monday, October 15, 2012 at 9:30pm by Victoria*

**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?
*Tuesday, February 26, 2013 at 10:30pm by El*

**PHYSICS 131 #2 **

a jetliner, traveling northward,is landing with a speed of 69m/s.once the plane touches down, it has a 750m runway in which speed is reduce to 6.1m/s. compute the avgerage acceleration (magnitude and direction) of the plane during landing.
*Thursday, February 4, 2010 at 2:48pm by Darrie *

**math**

A plane traveling at 600 mph leaves 3/4 hr earlier than a plane traveling at 800 mph. when will the second plane surpass the first?
*Wednesday, December 8, 2010 at 7:13pm by regina*

**Pre-Calculus**

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?
*Tuesday, February 26, 2013 at 10:30pm by Michelle*

**math**

a freight train leaves detroit traveling east at a speed of 65mph. one hour later, a passanger train leaves traveling wst a 85mph. how long will it take for the trains to have traveled the sam distance?
*Monday, November 28, 2011 at 2:34am by Anonymous*

**alegbra**

if tugboats speed is s, and current is c, since the distances are the same, and distance = speed * time, (s-c)*20 = (s+c)*5 = 160 20s - 20c = 160 5s + 5c = 160 or, 20s+20c = 640 40s = 800 s = 20 c = 12 check: 160/32 = 5 160/8 = 20
*Sunday, August 19, 2012 at 4:27pm by Steve*

**physics**

A block is pushed up a frictionless inclinded plane with initial speed V0 =5.50 m/s. The angle of incline is 0= 23.0º. How far up the plane does the block go? How long does it take to get there?
*Friday, November 8, 2013 at 11:56am by Anonymous*

**PHYSICS**

A block is pushed up a frictionless inclinded plane with initial speed V0 =5.50 m/s. The angle of incline is 0= 23.0º. How far up the plane does the block go? How long does it take to get there?
*Friday, November 8, 2013 at 12:23pm by Anonymous*

**physics**

A motorist traveling with constant speed of vc = 16.0 m/s passes a school-crossing corner, where the speed limit is 10 m/s. Just as the motorist passes, a police officer on a motorcycle stopped at the corner starts off in pursuit. The officer accelerates from rest at am = 2.67...
*Saturday, September 14, 2013 at 10:43am by Sat*

**Physics**

. The cheetah is the fastest running animal in the world. Cheetahs can accelerate to a speed of 20 m/s in 2.5 an can continue to accelerate to reach a stop speed of 29 m/s. Assume the acceleration is constant until the stop speed is reached and is zero thereafter. (a) Express ...
*Sunday, September 16, 2012 at 10:17pm by Chris*

**Physics**

Physics Homework _____________________________________________________________ 1.) A particle at t 1 = -2.0 s is at x 1 = 3.4 cm and at t 2 = 4.5 s is at x2 = 8.5 cm. What is its average velocity? Can you calculate its average speed from this data? ...
*Sunday, July 20, 2008 at 1:08pm by Ruby*

**Trig**

If it has a span of 160', then the equation of the parabola is f(x)=ax(160-x) where a is a constant, and x=0 and x=160 are the zeroes which correspond to points where the arch reaches ground/water. The constant "a" can be found by the fact that f(80)=25. Post your answer for a...
*Monday, July 18, 2011 at 9:16am by MathMate*

**physics**

A Boeing 787 is initially moving down the runway at 3.0 m/s preparing for takeoff. The pilot pulls on the throttle so that the engines give the plane a constant acceleration of 1.7 m/s2. The plane then travels a distance of 1900 m down the runway before lifting off. How long ...
*Sunday, September 8, 2013 at 4:23pm by Karen*

**math word problem**

a freight train leaves detroit traveling east at a speed of 65mph. one hour later, a passanger train leaves traveling wst a 85mph. how long will it take for the trains to have traveled the sam distance?
*Monday, November 28, 2011 at 2:28am by Anonymous*

**Physics**

1) A car traveling at 22m/s decelerates at a constant 1.5m/s^2. Calculate the time it takes to stop. I first calculated the distance which is 160 m. Then I used the formula d=vit+1/2at^2. I got a quadratic -0.75t^2+22t-160. I got 13 or 16 as my time, but the answer says 15. ...
*Tuesday, February 12, 2008 at 9:15pm by Alex*

**physics**

How long would it take for a stone to fall 250m traveling at a speed of 10m/s squared?
*Thursday, October 21, 2010 at 10:44am by Tammy*

**College Physics**

A 1200 kg airplane starts from rest and with a constant average forward acceleration of magbitude 5.0 m/s, reaches its takeoff speed in 9.00 s. The runway is 300 m long. What is the plane's takeoff speed?
*Tuesday, September 14, 2010 at 10:55pm by Dakota*

**Physics**

A small rocket is fired in a test range. It rises high into the air and soon runs out of fuel. On the way down it passes near an observer (sitting in a 22.5-m-high tower) who sees the rocket traveling at a speed of 37.9 m/s and moving in a vertical plane at an angle of 50.8° ...
*Tuesday, January 28, 2014 at 12:00am by Anonymous*

**Physics**

Since they are traveling at the same speed, each plane has the same amount of time and distance to take evasive action. d = Vt, t = d / V = (11/2) / 765 = 0.0072s.
*Monday, September 19, 2011 at 7:25pm by Henry*

**physics**

a car traveling at 7.0 m/s accelerates uniformly at 2.5 m/s TO REACH A SPEED OF 12.0 M/S HOW LONG DOES IT TAKE FOR THIS ACCELERATION TO OCCUR?
*Wednesday, September 26, 2007 at 8:53pm by DAISY*

**physics**

A jetliner, traveling northward, is landing with a speed of 72 m/s. Once the jet touches down, it has 730 m of runway in which to reduce its speed to 5.9 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the positive direction to...
*Tuesday, August 17, 2010 at 11:38pm by yoyoma*

**physics**

A jetliner, traveling northward, is landing with a speed of 65 m/s. Once the jet touches down, it has 785 m of runway in which to reduce its speed to 5.0 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the positive direction to...
*Tuesday, September 7, 2010 at 2:17pm by andrew*

**physics**

A jetliner, traveling northward, is landing with a speed of 65 m/s. Once the jet touches down, it has 785 m of runway in which to reduce its speed to 5.0 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the positive direction to...
*Tuesday, September 7, 2010 at 10:54pm by bethany*

**physics**

A jetliner, traveling northward, is landing with a speed of 62 m/s. Once the jet touches down, it has 700 m of runway in which to reduce its speed to 5.6 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the positive direction to...
*Friday, September 23, 2011 at 10:27pm by annmarie*

**Physics**

A jetliner, traveling northward, is landing with a speed of 67 m/s. Once the jet touches down, it has 765 m of runway in which to reduce its speed to 5.1 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the positive direction to...
*Friday, January 20, 2012 at 4:42pm by Natasha*

**Physics**

A jetliner, traveling northward, is landing with a speed of 60 m/s. Once the jet touches down, it has 795 m of runway in which to reduce its speed to 5.6 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the positive direction to...
*Friday, January 24, 2014 at 6:39pm by Maria*

**math **

In a storm, a plane flew against the wind and took 9 hours to cover 3,600 miles. The return trip, traveling with the wind, took 1 hour less. find the air speed of the plane, and the speed of the wind.
*Monday, April 4, 2011 at 9:26pm by zack*

**physics**

A speeding motorist traveling 125 km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 11.2 km/h/s (note the mixed units). (a) How much time will it take for the police officer to reach the speeder, assuming that the ...
*Wednesday, November 3, 2010 at 10:13pm by Whitney*

**Physics**

Consider a plane with a velocity relative to the air of 198 m/s in a westerly direction. If the wind has a speed relative to the ground of 56 m/s (in an easterly direction), how long does it take for the plane to travel from one city to another that is due west of the first by...
*Friday, October 19, 2012 at 8:40pm by Lily*

**physics **

a car traveling 7.0 m/s accelerates uniformly at 2.5 m/s squared to reach a speed of 12 m/s. how long does it take for the acceleration to occur?
*Tuesday, September 20, 2011 at 6:30pm by Alex*

**physics **

a car traveling 7.0 m/s accelerates uniformly at 2.5 m/s squared to reach a speed of 12 m/s. how long does it take for the acceleration to occur?
*Tuesday, September 20, 2011 at 7:49pm by chris*

**physics**

The combined mass of a race car and its driver is 600. kilograms. Traveling at a constant speed, the car completes one lap around a circular track of radius 160 meters in 36 seconds. A) Based on the given information, calculate the speed of the car. B) Calculate the magnitude ...
*Sunday, January 10, 2010 at 1:38pm by Nicole*

**physics**

An airport has runways only 136m long. A small plane must reach a ground speed of 39m/s before it can become airborne. What average acceleration must the plane's engines provide if it is to take off safely from its airport? Answer in units of m/s^2.
*Friday, September 14, 2012 at 11:09pm by sam*

**physics**

A 3 kg mass attached to a string 6 m long is to be swung in a circular at a constant speed making one complete revolution in 1.25 s. Determine the value that the breaking strain that the string must not exceed if the string is not to break when the circular motion is in (a) a ...
*Saturday, March 15, 2014 at 3:03am by waslat *

**physics**

acceleration period: v = a t = 5 * 8 = 40 m/s x = (1/2) a t^2 = 2.5 * 64 = 160 m this is the initial condition for the constant velocity coasting period: x = Xi + Vi t + (1/2) a t^2 x = 160 + 40 t + (1/2) 0 t^2 = 160 + 40(12-8) = 160 + 160 = 320 meters
*Friday, July 6, 2012 at 6:01am by Damon*

**math**

Direct variation An airplane is traveling at a constant rate of 450 mi/h. Write an equation that shows how far the plane travels (D) in h hours. D = V * h = 450 h V is the speed, 450 miles/hour
*Sunday, August 5, 2007 at 3:10pm by joyce*

**physics **

A plane traveling at 260m/s has a speed of Match 0.80. What is the speed of sound in the air
*Wednesday, June 6, 2012 at 1:53pm by Melissa*

**math**

A motorcycle leaves colorado springs, colorado, traveling north on I25 at an average speed of 47 mph. one hour later, a car leaves colorado springs, traveling south on I-25 at an average speed of 54 mph. How long after the motorcycle leaves will it take until they are 52 miles...
*Tuesday, March 5, 2013 at 2:22pm by kelly*

**Physics**

A boy is whirling around a stone tied at the end of a 0.71 m long string at constant angular speed of 4 revolutions per second in a plane perpendicular to the ground. The string breaks when it is making an angle of 54 degrees above the horizontal and the stone is on the way up...
*Friday, November 27, 2009 at 2:15am by Lola*

**physics**

a car traveling at 7.0 m/s accelerates uniformly at 2.5 m/s to the 2nd power to reach a speed of 12.0 m/s. how long does it take for this acceleration to occur.?
*Wednesday, September 22, 2010 at 12:25pm by Danica*

**1th phyics**

A car traveling at 7.5 m/s accelerates 3.4m/s2 to reach a speed of 15.0 m/s. How long does it take for this acceleration to occur?
*Sunday, September 26, 2010 at 6:22pm by Taylor*

**physics**

A car traveling at 7.3 m/s accelerates 4.5 m/s2 to reach a speed of 11.0 m/s. How long does it take for this acceleration to occur? Answer in units of s.
*Monday, October 11, 2010 at 11:34am by leigha*

**math-word problem**

A plane flies with a ground speed of 160 miles per hour if there is no wind. It travels 350 miles with a head wind and in the same time it takes to go 450 miles with a tail wind. Find the speed of the wind. I'm pretty bad with word problems, but this is how I answered it: set ...
*Tuesday, May 6, 2008 at 11:14am by Jennifer*

**physics**

First solve the vertical plane problem. How long does it take to drop from 2 meters ? It has zero initial velocity down. -2 = 0 + 0 t +(1/2)(-9.8) t^2 t^2 = 4/9.8 t = .64 seconds in the air then distance = speed * time 21 = speed * .64
*Wednesday, December 15, 2010 at 5:17pm by Damon*

**physics**

An airport has runways only 132 m long. A small plane must reach a ground speed of 40 m/s before it can become airborne. What average acceleration must the plane’s engines provide if it is to take off safely from its airport? Answer in units of m/s2
*Monday, September 5, 2011 at 3:56pm by carissa*

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