Tuesday

September 30, 2014

September 30, 2014

Number of results: 39,363

**physics**

An airplane lands and starts down the runway at a southwest velocity of 41 m/s. What constant acceleration allows it to come to a stop in 1.3 km?
*October 3, 2007 by stephanie*

**Physics**

An airplane lands and starts down the runway at a southwest velocity of 41 m/s. What constant acceleration allows it to come to a stop in 1.3 km?
*February 2, 2010 by Max*

**physics**

An airplane lands and starts down the runway at a southwest velocity of 44 m/s. What constant acceleration allows it to come to a stop in 1.3 km?
*February 2, 2010 by lisa*

**Physics**

An airplane lands and starts down the runway at a southwest velocity of 41 m/s. What constant acceleration allows it to come to a stop in 1.3 km?
*February 12, 2010 by Max*

**Physics**

An airplane lands and starts down the runway at a southwest velocity of 43 m/s. What constant acceleration allows it to come to a stop in 1.1 km?
*September 10, 2011 by Unknown*

**physics**

An airplane lands and starts down the runway at a southwest velocity of 48 m/s. What constant acceleration allows it to come to a stop in 1.5 km?
*September 11, 2011 by lol*

**Physics**

An airplane lands and starts down the runway at a southwest velocity of 43 m/s. What constant acceleration allows it to come to a stop in 1.2 km?Answer is in ___ m/s2.
*February 7, 2010 by Candy*

**Physics**

An airplane lands and starts down the runway at a southwest velocity of 46 m/s. What constant acceleration allows it to come to a stop in 1.1 km? PLEASE HELP ME WITH THIS QUESTION AND PROVIDE AN EXPLANATION IF POSSIBLE!!!! THANK YOU!
*January 24, 2011 by MB*

**physics**

An airplane starts at rest and accelerates down the runway for 20s. At he end of the runway, it's velocity is 80 m/a north. What is its acceleration?
*February 18, 2013 by Kaylee*

**PHysics XXX**

An airplane travels 330 m down the runway before taking off. Assuming that it has constant acceleration, if it starts from rest and becomes airborne in 9.00 s, how fast (in m/s) is it moving at takeoff? A 73.3 m/s B 36.7 m/s C 1490 m/s D 660 m/s
*March 25, 2014 by Luis*

**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 ...
*February 8, 2014 by Michelle*

**physics**

A 20000 kg airplane takes off by traveling 300 m down a runway while the engines exert a continuous force of 4000 N.(a) Calculate the change in kinetic energy of the airplane during takeoff.(b) Determine the speed of the airplane as it leaves the runway.
*January 13, 2012 by emily*

**Physics**

A man seeking to set a world record wants to tow a 110000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 70 kg, and the coefficient of static friction between his shoes and the runway is 0.76. What is the greatest...
*September 22, 2012 by StressedStudent*

**Physics**

A man seeking to set a world record wants to tow a 122000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 95 kg, and the coefficient of static friction between his shoes and the runway is 0.74. What is the greatest...
*March 20, 2013 by Kelly*

**Physics**

A man seeking to set a world record wants to tow a 122000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 95 kg, and the coefficient of static friction between his shoes and the runway is 0.74. What is the greatest...
*March 20, 2013 by Heather*

**physics 1 please help!**

A man seeking to set a world record wants to tow a 106000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 77 kg, and the coefficient of static friction between his shoes and the runway is 0.99. What is the greatest...
*February 10, 2011 by Hannah*

**physics 1 please help!**

A man seeking to set a world record wants to tow a 106000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 77 kg, and the coefficient of static friction between his shoes and the runway is 0.99. What is the greatest...
*February 10, 2011 by Hannah*

**science**

A man seeking to set a world record wants to tow a 106,000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 77 kg, and the coefficient of static friction between his shoes and the runway is 0.82. What is the ...
*October 4, 2013 by Donna*

**physics**

A man seeking to set a world record wants to tow a 104,000-kg airplane along a runway by pulling horizontally on a cable attached to the airplane. The mass of the man is 93 kg, and the coefficient of static friction between his shoes and the runway is 0.78. What is the ...
*November 17, 2013 by Hanna*

**physics**

An airplane starts from rest at the end of a runway and accelerates at a constant rate. In the first second, the airplane travels 1.11 m. What is the speed of the airplane at the end of the second second?
*February 19, 2012 by suri*

**Physics**

An airplane requires 420 m of runway to take off from an airstrip. If the plane starts from rest and it takes 32 s to lift off, with what velocity does it leave the ground? What was the average acceleration of the plane?
*April 22, 2014 by Corey Brown*

**physics**

An airplane requires 420 m of runway to take off from an airstrip. If the plane starts from rest and it takes 32 s to lift off, with what velocity does it leave the ground? What was the average acceleration of the plane?
*June 3, 2014 by grey*

**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?
*September 14, 2010 by Dakota*

**Math**

There is a mathematical relationship between an airplane’s weight x and the runway length required at takeoff. For certain types of airplanes, the minimum runway length L in thousands of feet may be modeled by L(x) = 1.3 ln x, where x is in thousands of pounds. a) Estimate the...
*April 25, 2013 by Tamie*

**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 ...
*September 8, 2013 by Karen*

**phsyics **

An airplane has a velocity of 185 miles per hour when it lands, how long must the runway be if the plane decellerates at 2.5 meters per second
*July 5, 2012 by Andrew Moore*

**physics **

An airplane has a velocity of 185 miles per hour when it lands, how long must the runway be if the plane decellerates at 2.5 meters per second
*July 5, 2012 by Andrew Moore*

**physics**

1.The speed of a train increased from 15 mi/hr to 25 mi/hr in a distance of 500 ft. Calculate the average acceleration in ft/s2. 2.An airplane taking off from a landing field has a run of 500 m. It starts from rest, moves with constant acceleration, and makes the run in 30 s. ...
*October 9, 2010 by jazz*

**Physic**

I am confuse about this one question can some one please help me. The Navy wants a new airplane launcher for their aircraft carriers and you are on the design team. The launcher is effectively a large spring that pushes the plane for the first 3.49 meters of the 24.2-meter ...
*October 13, 2012 by Janki Patel*

**Physics**

An airplane pilot tries to fly directly east with a velocity of 800.0 km/h. If wind comes from the southwest at 80.0 km/h, what is the relative velocity of the airplane to the surface of Earth?
*October 27, 2009 by Amber *

**Acceleration physics**

1. A sprinter finishes the race with a velocity of 8.9 m/s. the sprinter accelerated to a stop at a rate of -2.7 m/s2. how long did it take the sprinter to come to a stop? 2. A cycllist starts from rest & reaches a velocity of 18 m/s southwest in 3.8 seconds. what was the ...
*May 12, 2014 by Durga*

**physics**

An airplane reaches a velocity of 71m/s^2 when it takes off. What must its acceleration be if the runway is 1.0km long
*January 17, 2012 by tasha-please help#3*

**physics**

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted on the airplane by the...
*September 6, 2011 by John*

**Physics**

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted on the airplane by the...
*September 17, 2011 by John*

**physics**

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted on the airplane by the...
*September 21, 2011 by John*

**physics....answer this!**

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted on the airplane by the...
*September 14, 2011 by John*

**PHYSICS**

An airplane is flying straight and level at a speed vo = 150 mph and with a constant time rate of increase of speed v' = 20 ft/s^2, when it starts to climb along a circular path with a radius of curvature p = 2000 ft. The airplane maintains v' constant for about 30s. Determine...
*July 9, 2013 by ROCKY*

**Challenger institution of technology**

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted on the airplane by the...
*September 5, 2011 by John*

**math**

The runway of an airfield faces west. An airplane, flying in the direction of north-east at a height of 2km and at a speed of 400km/h, on a path which passes over a point 3km west of the runway end, is spotted sqrt(29)km horizontally(south-western quadrant) from the runway end...
*November 20, 2011 by Jainee*

**Physics**

An airplane with an airspeed of 50km/h lands on a runway where the wind speed is 30km/h .
*February 21, 2014 by Libna*

**physics**

An airplane of mass 2800 Kg has just lifted off the runway. It is gaining altitude at a constant 2.3 M/s while the horizontal component of its velocity is increasing at a rate of 0.86 M/s2. Assume g= 9.81 M/s2. (a) Find the direction of the force exerted on the airplane by the...
*September 12, 2011 by John*

**Physics**

A small turbo-prop commuter airplane, starting from rest on a Gander airport runway, accelerates for 19.5 s before taking off. Its speed at takeoff is 53.6 m/s (120 mi/hr). Calculate the acceleration of the plane, in g's, assuming it remains constant. (i.e., divide the ...
*September 30, 2013 by CONFUSED PHYSICS STUDENT*

**physics**

A jumbo jet needs to reach a speed of 369 km/hr on the runway for takeoff. Assuming a constant acceleration and a runway 1.6 km long, what minimum acceleration from rest is required?
*November 11, 2013 by Dhruv*

**physics**

A small turbo-prop commuter airplane, starting from rest on a Tallahassee airport runway, accelerates for 21.0 s before taking off. Its speed at takeoff is 56.0 m/s (125 mi/hr). Calculate the acceleration of the plane, assuming it remains constant. Express your answer in g's...
*January 9, 2011 by Lo*

**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 ...
*September 10, 2013 by JD*

**physics**

A 2.6 kg block slides down a 25° inclined plane with constant acceleration. The block starts from rest at the top. At the bottom, its velocity is 0.75 m/s. The incline is 1.6 m long. (a) What is the acceleration of the block? (b) What is the coefficient of friction?
*February 11, 2014 by Khadija*

**pre cal**

an airplane is flying at an altitude of 2500 feet parallel to the ground, and the ground distance to the start of the airport runway is 7500 feet. What s the plane's angle of depression to the start of the runway? What is the distance between the airplane and the airport runway?
*February 6, 2011 by karina*

**Physics**

An aircraft starts from rest and accelerates at 42.5m/s^2 until it takes off at the end of the runway. How long will it take the aircraft to travel down the 2.6km runway? Answer is 11 seconds
*July 3, 2013 by alex*

**physics**

A small plane starts down the runway with acceleration 7.4 .if the force provided by its engine is 1.5×104 , what is the plane's mass?
*June 25, 2011 by Anonymous*

**Physics**

There's 2. 1) A 1200-kg airplane starts from rest and, with a constant average forward acceleration of magnitude 5.0m/s^2, reaches its take off speed in 9.00 s. The runway is 300 m long. What is the planes takeoff speed? 2) A boy is attempting to swim directly across a river. ...
*September 12, 2010 by Johnny*

**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...
*March 26, 2013 by Brandon*

**math**

An airplane is 34 ground miles from the end of the runway and 6 miles high when it begins its approach to the airport. To the nearest mile,what is the distance from the airplane to the end of the runway?
*May 1, 2011 by sara*

**physics**

suppose an airplane, landing on a runway with an initial speed of 45 m/s, slows down at an acceleration rate of -5m/s/s. What will the speed of the airplaine be one second after landing?
*September 14, 2011 by Debbie*

**physics**

michael starts at x=3 m and travels to the right at a constant 6 m/s for 2 s. he then slows down at a constant rate, coming to rest at 4 s after beginning to slow. A) what is michael's position when t=4 s.? C) What is Michael's velocity when t=4 s? d) What is Michael's ...
*November 14, 2012 by Brianna*

**Physics**

A small, single engine airplane is about to take off. The airplane becomes airborne, when its speed reaches 117.0 km/h. The conditions at the airport are ideal, there is no wind. When the engine is running at its full power, the acceleration of the airplane is 2.40 m/s2. What ...
*September 28, 2014 by Molly*

**physics**

ignoring air resistance, describe how an object would fall to the ground using the words velocity and acceleration for a ball that is thrown straight up: a.) the velocity is __on the way up (increasing, decreasing, constant, zero) b.)the velocity is __at the very top (...
*October 9, 2012 by Anita*

**Physics**

An object starts from rest an under a constant acceleration has traveled a displacement of 30.5 meters when it reaches a certain final velocity. The same object starts from rest, but has an acceleration which is a factor of 3.3 times smaller than the original acceleration. If ...
*September 8, 2014 by Sam*

**phys**

An airplane must reach a speed of 185 mi/h to take off. If the runway is 500 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?
*January 30, 2011 by Lisa*

**Physics**

An airplane must reach a speed of 240.5 mi/h in order to take off. If the runway is 571.5 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?
*September 10, 2011 by Anon14*

**Science**

An airplane lands with a velocity of 100m.s/1.The maximum rate at which it can slow down is 5,0m.s/2.What is the minimum time needed to come to rest, starting from when it first touches ground?
*September 14, 2014 by Nhlanhla*

**physics**

A body starts with an initial velocity of 10m/s and moves along a straight line with a constant acceleration. When the velocity of the particle becomes 50 m/s the acceleration is reversed in direction without changing magnitude. Find the velocity of the particle when it ...
*July 17, 2014 by karan*

**physics**

A ball starts at the origin from rest rolling down a hill. It takes seven seconds for the ball to reach point “A”, which is 25 meters from the origin. At point “B”, the ball’s velocity is 15 m/s. You may assume constant acceleration. a. What is the acceleration of the ball? [2...
*September 24, 2013 by Sue*

**physics**

Two cars cover the same distance in a straight line. Car A covers the distance at a constant velocity. Car B starts from rest and maintains a constant acceleration. Both cars cover a distance of 487 m in 216 s. Assume that they are moving in the +x direction. Determine (a) the...
*January 20, 2012 by Natasha*

**Physics**

Two cars cover the same distance in a straight line. Car A covers the distance at a constant velocity. Car B starts from rest and maintains a constant acceleration. Both cars cover a distance of 515 m in 229 s. Assume that they are moving in the +x direction. Determine (a) ...
*September 16, 2014 by Dakkota*

**Physics**

An object moves in a circular path with constant speed. Is the object's velocity constant? Is its acceleration constant? Please explain. From what I've learned in my 8th grade science class, when velocity changes is when the direction or speed changes. So if it is moving in a ...
*January 10, 2007 by anonymous*

**physics**

A 2.5-kg block slides down a 17.0° inclined plane with constant acceleration. The block starts from rest at the top. At the bottom its velocity reaches 0.70 m/s. The length of the incline is 1.7 m. What is the acceleration of the block? What is the coefficient of friction ...
*November 1, 2011 by Eddie*

**physics**

an aeroplane touches down on the landing strip at an airpot.Assume that the speed at which the plane touches down is 100m.s and that the maximum length of the runway is 1000m.calculate the average acceleration that the plane must stop within the length of the runway
*October 23, 2010 by bolt*

**physics**

an aeroplane touches down on the landing strip at an airpot.Assume that the speed at which the plane touches down is 100m.s and that the maximum length of the runway is 1000m.calculate the average acceleration that the plane must stop within the length of the runway
*October 23, 2010 by bolt*

**physics**

A jumbo jet must reach a speed of 360 km/h on the runway for takeoff. What is the least constant acceleration needed for takeoff from a 1.80 km runway?
*September 3, 2009 by mariah*

**Physics**

An object starts from rest an undergoes a constant acceleration in the positive x direction. After some time it covers a displacement of 37 meters in the positive x direction achieving some final velocity. If the object started from rest with double the original acceleration (...
*September 3, 2014 by Jessica*

**Physics**

A 2.3 kg block slides down a 25° inclined plane with constant acceleration. The block starts from rest at the top. At the bottom, its velocity is 0.65 m/s. The incline is 1.6 m long. What is the coefficient of friction?
*December 20, 2012 by Mat*

**Physics**

A ball rolls down a hill with a constant acceleration of 2.0 m/s2. If the ball starts from rest, (a) what is its velocity and the end of 4.0 s? (b) How far did the ball move?
*September 26, 2011 by Me*

**Physics**

A ball rolls down a hill with a constant acceleration of 2.0 m/s2. If the ball starts from rest, (a) what is its velocity and the end of 4.0 s? (b) How far did the ball move?
*September 26, 2011 by Me*

**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?
*September 22, 2011 by John*

**Physics**

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle increases to 2R. The ...
*June 8, 2014 by Sam*

**Physics**

A model airplane is flying in a horizontal circle with a constant speed. The initial radius of the circle is R. The boy holding the cord to which the airplane is attached, then decides to increase the length of the cord so that the radius of the circle increases to 2R. The ...
*June 8, 2014 by Sam*

**physics**

An airplane taxis onto the runway going at 10 m/s.if it can accelerate at 3.0 m/s square and its take-off speed is 90 m/s, what length of runway will it need?
*November 25, 2012 by Rita*

**physics**

An airplane taxis onto the runway going at 10 m/s.if it can accelerate at 3.0 m/s square and its take-off speed is 90 m/s, what length of runway will it need?
*November 25, 2012 by Rita*

**science**

Your airplane just ran out of gas. Your plane is falling at a velocity of 80m/sec down. At that velocity, how long will it take your airplane to reach the ground?
*October 4, 2012 by Bokyung*

**Physics**

An airplane with an airspeed of 66km/h lands on a runway where the wind speed is 28km/h .What is the landing speed of the plane if the wind is head-on?
*September 18, 2013 by Milly Mac*

**math**

Which three options are true about motion in a straight line. A. A particle which moves at an increasing velocity has a constant acceleration. B. If two particles always have the same velocity as each other, their separation does not change. C. A particle which has zero ...
*April 30, 2007 by jojo*

**cary collage**

"A 2.5-kg block slides down a 25 degree inclined plane with constant acceleration. The block starts from rest at the top. At the bottom, its velocity reaches 0.65 m/s. The length of the incline is 1.6m. a) What is the acceleration of the block? b) What is the coefficient of ...
*September 27, 2010 by sahan*

**Physics**

A cyclist starts at the top of a straight slope with an initial velocity of 2.82 m/s. Five seconds later, she is at the bottom of the incline, having traveled 45.8 m. Find her velocity at the bottom of the hill and her acceleration, assuming it to be constant. (Let down the ...
*January 26, 2012 by Fletcher*

**Physics**

A cyclist starts at the top of a straight slope with an initial velocity of 3.02 m/s. Five seconds later, she is at the bottom of the incline, having traveled 49.6 m. Find her velocity at the bottom of the hill and her acceleration, assuming it to be constant. (Let down the ...
*January 26, 2012 by Aaron*

**physics**

A car is parked on a cliff overlooking the ocean on an incline that make an angel of 37 degree with the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. the car rolls from rest down the incline with a constant acceleration of ...
*September 23, 2010 by shah*

**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...
*September 1, 2011 by Fainah*

**college physics**

an airplane starts from rest and accelerates at a constant 3.00m/s2 for 30.0s before leaving the ground. a). how far did it move? b). how fast was the airplane going when it took off?
*March 29, 2013 by sue*

**Physics**

A runner of mass 51.5 kg starts from rest and accelerates with a constant acceleration of 1.35 m/s2 until she reaches a velocity of 5.7 m/s. She then continues running with this constant velocity. (Take the direction the runner is going to be the positive direction. Indicate ...
*May 18, 2012 by James*

**Physics**

A car starts from rest and accelerates at a rate of 1 m/s^2 until it reaches a velocity of 7 m/s. It then travels at a constant velocity for the next 15 seconds. The driver then applies the brake, bringing the car to stop. The brakes provide an acceleration of -4 m/s^2. a) ...
*September 14, 2014 by Ulash*

**physics**

an airplane was moving with a velocity equal to 150 mph when the velocity was increased with uniform acceleration to 300 mph in 5 min. Calculate the number of miles the airplane traveled during that interval
*June 21, 2013 by Jen*

**physics**

An airplane flies north at a constant speed for 6h and covers a distance of 2400km. What is the plane's velocity? The acceleration?
*October 19, 2011 by Jordan*

**engineering**

an airplane was moving with a velocity equal to 300 mph when the velocity was increased with uniform acceleration to 600 mph in 5 min. calculate the number of miles the airplane traveled during that interval of time
*January 29, 2012 by Anonymous*

**math**

Which three options are true about motion in a straight line. A. A particle which moves at an increasing velocity has a constant acceleration. B. If two particles always have the same velocity as each other, their separation does not change. C. A particle which has zero ...
*May 12, 2007 by clara*

**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?
*January 14, 2012 by tracy*

**Physics**

A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.8 m/s2 for 4.4 seconds. It then continues at a constant speed for 13.5 seconds, before getting tired and slowing down with constant ...
*August 27, 2012 by David*

**Physics**

If an airplane is moving at a constant velocity of 400 m/s for 20 s, what is its acceleration during this period? 0 m/s squared 20 m/s squared 40.82 m/s squared need more information wouldnt it be need more information because isnt acceleration ending velocity minus starting ...
*April 29, 2008 by Greg*

**Algebra 2. Please Help Someone!!**

an airplane's altitude is 100 feet as it descents for a landing on a runway whose touchdown is 5000 ft away. Let the x-axis represent the ground and the y-axis represent the airplane's altitude. What is the slope of the airplane's descent? What is the y-intercept of the ...
*August 24, 2014 by Ben*

**Physics**

A runner of mass 51.5 kg starts from rest and accelerates with a constant acceleration of 1.35 m/s2 until she reaches a velocity of 5.7 m/s. She then continues running with this constant velocity. (Take the direction the runner is going to be the positive direction. Indicate ...
*May 18, 2012 by James*

**maths**

Which three options are true about motion in a straight line. A. A particle which moves at an increasing velocity has a constant acceleration. B. If two particles always have the same velocity as each other, their separation does not change. C. A particle which has zero ...
*April 18, 2007 by kelly*

**Physics**

1) A jetliner, traveling northward, is landing with a speed of 69.3 m/s. Once the jet touches down, it has 787 m of runway in which to reduce its speed to 13.6 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the direction of ...
*May 27, 2012 by Hannah*

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