Thursday

March 5, 2015

March 5, 2015

Number of results: 59,622

**Physics**

A machine swings a mass of 1kg connected to a massless rope in a vertical circle so that the speed of them mass is constant at 8 m/s. The rope is 1.0 m long, and the center of the circle is fixed at all times. a) Find the acceleration of the mass with magnitude and direction ...
*November 12, 2013 by Robin*

**physics**

A car is moving down a street at 51 km/h. A child suddenly runs into the street. If it takes the driver 0.97 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
*October 3, 2010 by mike*

**physics**

A car is moving down a street at 51 km/h. A child suddenly runs into the street. If it takes the driver 0.62 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
*October 23, 2012 by miranda*

**Physics**

A car is moving down a street at 67 km/h. A child suddenly runs into the street. If it takes the driver 1.26 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
*February 6, 2014 by Jake*

**science**

you and your brother are pushing a car with a dead battery. You exert forces of 20n and 25n in the same direction. What is the force applied on the car?
*September 17, 2014 by kirrah*

**physics**

A car (mass = 1150 kg) is traveling at 26.7 m/s when it collides head-on with a sport utility vehicle (mass = 2030 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle traveling? Include units.
*July 11, 2013 by rodney*

**Physics**

(a) Calculate the magnitude of the gravitational force exerted on a 488-kg satellite that is a distance of 1.95 times earth radii from the center of the earth. (b) What is the magnitude of the gravitational force exerted on the earth by the satellite? (c) Determine the ...
*October 4, 2012 by Donald*

**Physics**

(a) Calculate the magnitude of the gravitational force exerted on a 430-kg satellite that is a distance of 2.81 times earth radii from the center of the earth. (b) What is the magnitude of the gravitational force exerted on the earth by the satellite? (c) Determine the ...
*December 12, 2012 by shine*

**science**

When the front of a 5.0 m long bus traveling at a constant speed of 20 m/s is 55 m away from an intersection, the traffic light turns yellow. It will take 3.0 s before the traffic light turns red. The drivers reaction time is 0.25 s. The bus can accelerate up to 2.0 m/s2 or ...
*July 27, 2014 by Nica*

**maths - two dimensional motion**

The problem I am trying to solve is from AQA Mechanics M1 and is as follows: An object is moving in a plane. At time t=0, it is at the origin, O, and moving with velocity u. After 2 seconds it is at A where OA = -2i - 4j. After a further 3 seconds it is at B where AB = 10i - ...
*April 9, 2013 by Maggie*

**physics**

A roller-coaster car has a mass of 1100 kg when fully loaded with passengers. As the car passes over the top of a circular hill of radius 20 m, its speed is not changing. (a) At the top of the hill, what is the normal force (using the negative sign for the downward direction) ...
*March 9, 2013 by physics*

**PHYSICS**

A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14.0 m/s, the total force exerted on the driver has magnitude 115 N. What are the magnitude and direction of the total vector force exerted on the driver if the speed is 25.0 m/s ...
*January 18, 2010 by Laila*

**Physics**

A 1596 kg car traveling at 24.91 m/s skids to a halt. What is the change in the combined thermal energy of the car and the road surface?
*September 28, 2011 by Joe*

**Physics**

A 1596 kg car traveling at 24.91 m/s skids to a halt. What is the change in the combined thermal energy of the car and the road surface?
*September 29, 2011 by Joe*

**algebra**

If a car leaves a skid mark of 500 feet, how fast was the car traveling? Using the formula r=25L
*April 23, 2012 by Coach*

**physics**

If the coefficient of friction between the tires of a car and the road is 0.101, what is the minimum stopping distance of a car traveling at 78.4 km/hr?
*September 29, 2012 by Demis*

**Physics**

Suppose a 1,600 kg car is traveling at 20.0 m/s. What average force is needed to stop the car in 4.0 s? Can you explain to me how you got your answer, thank you.
*February 16, 2013 by Demere*

**Physics**

A 12,000kg railroad car traveling at 12.0m/s couples with an identical car sitting on the tracks. What is the speed of the joined card?
*April 22, 2014 by Shon*

**Physics**

A driver brings a car traveling at 22m/s to a full stop in 2 seconds. How fast does the car uniformly decelerate?
*September 14, 2014 by Spencer*

**Physics**

A car with good tires on a dry road can decelerate at about 5.0m/s/s when braking. If the car is traveling at 55miles/hour, how much time does it take the car to stop? 55 mph = 80.7 ft/s = 24.6 m/s Divide the initial speed by the deceleration rate to get the time required. (24...
*September 18, 2006 by Savannah*

**Gen. physics**

A cart is driven by a large propeller or fan, which can accelerate or decelerate the cart. The cart starts out at the position x = 0 m, with an initial velocity of +6.4 m/s and a constant acceleration due to the fan. The direction to the right is positive. The cart reaches a ...
*July 2, 2013 by ODU*

**physics**

a large bus and a van, both moving with a velocity of magnitude v, have a head-on-collision and both the vehicles stop after the collision. if the time of the collision is 1 sec then, a) which vehicle experiences smaller force of impact? b) which vehicle experiences the ...
*June 7, 2013 by h*

**physics**

A 3.24 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.8N at an angle theta=23.0degrees above the horizontal, as shown. What is the magnitude of the acceleration of the block when the force is applied?
*January 28, 2012 by Rachel *

**math**

If two cars leave at the same time and are traveling in opposite directions, one car at 50 and the other at 55. How far away from each other will they be after 1 hours?
*March 19, 2011 by sam*

**physics**

A 450 g block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.670, and the coefficient of kinetic friction is 0.380. A force of magnitude P pushes the block forward and downward as shown in the figure below. Assume ...
*October 17, 2011 by carlton*

**Physics**

A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center, as shown in the figure below. The linear speed of a passenger on the rim is constant and equal to 6.60 m/s. What is the magnitude of the passenger's acceleration as she passes through the ...
*September 19, 2006 by Julie*

**math/physics**

A 90.0-g disk traveling 3.00 m/s to the right collides with a 75.0-g disk traveling 8.00 m/s to the left. After the collision, the heavier disk is traveling 7.00 m/s to the left. What is the velocity of the lighter disk after the collision? Do I have this setup right? (90.0*3....
*October 8, 2014 by Jay*

**Physics**

The velocity of a 629-kg auto is changed from 10.0 m/s to 44.0 m/s in 70.0 s by an external, constant force. (a) What is the resulting change in momentum of the car? (b) What is the magnitude of the force?
*December 2, 2008 by Anonymous*

**College Physics **

A rifle bullet with a mass of 17.5 g traveling toward the right at 293 m/s strikes a large bag of sand and penetrates it to a depth of 23.6 cm. Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet.
*October 9, 2012 by JB*

**math (stats)**

For a car traveling 30 mph in normal conditions, the distance required to brake to a stop is normally with a mean of 50 feet and a standard deviation of 8. you are traveling in a area at 30 mph and a car swerves into your path at a distance of 60 feet away. what is the ...
*November 17, 2014 by sarah*

**College Physics**

In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotational motion is faster than ...
*October 2, 2010 by Dawn*

**physics**

a racing car has a uniform acceleration of 4ms-2. what distances will it cover in 10s after start?
*July 6, 2012 by tinku*

**physics**

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 260 N applied to its edge causes the wheel to have an angular acceleration of 0.795 rad/s2. (a) What is the moment of ...
*November 15, 2012 by Shane*

**physics**

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 250 N applied to its edge causes the wheel to have an angular acceleration of 1.053 rad/s2. (a) What is the moment of ...
*November 30, 2012 by heather*

**physics**

Entrance and exit ramps for freeways are often circular stretches of road. As you go around one at a constant speed, you will experience a constant acceleration. Suppose you drive through an entrance ramp at a modest speed and your acceleration is 3.0m/s2 . What will be the ...
*September 18, 2013 by Anonymous*

**physics...PLZ HELP! =)**

A constant force acts on a moving object. The object makes a fixed magnitude of displacement in some direction. In general, in what direction is the displacement that will result in the object traveling with the least kinetic energy after the displacement occurs? A.The same ...
*October 16, 2012 by Elizabeth*

**physics**

a train starts from rest and accelerates uniformly at 100m/min^2 for 10 min.then it maintains a constant velocity for remaining 20 min.brakes are applied and train uniformly retards and comes to rest in next 5 min. a)the maximum velocity reached b)the retardation in last 5 min...
*May 28, 2012 by parul*

**physics**

a train starts from rest and accelerates uniformly at 100m/min^2 for 10 min.then it maintains a constant velocity for remaining 20 min.brakes are applied and train uniformly retards and comes to rest in next 5 min. a)the maximum velocity reached b)the retardation in last 5 min...
*May 30, 2012 by parul*

**physics**

a train starts from rest and accelerates uniformly at 100m/min^2 for 10 min.then it maintains a constant velocity for remaining 20 min.brakes are applied and train uniformly retards and comes to rest in next 5 min. a)the maximum velocity reached b)the retardation in last 5 min...
*May 30, 2012 by PLZ HELP ME NOW...*

**Physics**

Mass m_A rests on a smooth horizontal surface, m_B hangs vertically. If m_A=15.0 kg and m_B=3.0 kg in the figure , determine the magnitude of the acceleration of each block.Enter your answers numerically separated by a comma. If initially m_A is at rest 1.300 m from the edge ...
*September 23, 2009 by Physics*

**physics**

A sports car has a weight of 9,300 N and can accelerate from rest to a velocity of 30.0 m/s in a measured time of 11s.1)what is the mass of the car? 2) what is the kinetic energy of the car at the end of this acceleration?
*November 8, 2012 by tommy*

**Accident Investigation: Law+Physics**

What exactly do these following driving violations mean? I'm not a driver, so I'm not entirely sure of their meanings... -Following too closely [does that count if a car crashes into another?] -Reckless driving [does that count if a car crashes into another?] -Inadequate ...
*January 12, 2012 by Cicilia*

**Accident Investigation: Law+Physics**

What exactly do these following driving violations mean? I'm not a driver, so I'm not entirely sure of their meanings... -Following too closely [does that count if a car crashes into another?] -Reckless driving [does that count if a car crashes into another?] -Inadequate ...
*January 12, 2012 by Cicilia*

**physics**

the occupants of a car traveling at 25.7 m/s become weightless for an instant when traveling over the top of a hill. Calculate the radius of curvature of hill
*November 20, 2011 by Jason*

**Physics**

When Gorix escaped from Dr. Sloth's ship, his ship started at rest. Gorix immediately set his thrusters to full power, and his ship's acceleration increased by 2 m/s2 every second for 15 seconds. At that point, the ship remained at constant acceleration for another 30 seconds...
*April 3, 2008 by Andrea*

**Physics**

A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.30 . At 10.0 after blastoff, the engines suddenly fail, which means that the force they produce instantly stops. How high above the launch pad will the rocket eventually go? Find the ...
*September 10, 2006 by JC*

**Physics**

If the force of the road on the car's wheels, pushing it forward, is a constant 3.5 kN, and the car's mass is 2 kg, then how long will the car take to go from 15 m/s to 50 m/s?
*February 14, 2013 by Adelaide*

**Physics**

Two identical dragsters, starting from rest, accelerate side by side along a straight track. The wheels have identical angular acceleration. The wheels on one of the cars roll without slipping, while the wheels on the other slip during part of the time...
*April 5, 2008 by James*

**physics**

A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0 angle. The magnitude of the force applied by each rope is 2900 newtons (N). (a) How much force would a single rope need ...
*June 28, 2013 by will*

**physics**

A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0 angle. The magnitude of the force applied by each rope is 2900 newtons (N). (a) How much force would a single rope need ...
*January 27, 2014 by tim*

**math**

The value of a new car decreases exponentially.Suppose your mother buys a new car for 22,000. The value of the car decreases by 20% each year. a.what is the initial price of the car. The decay factor. b. write an equation to model the value of the cars years after she buys it...
*October 14, 2012 by john*

**Physics**

Two forces, F1 and F2 , act at a point. F1 has a magnitude of 8.80N and is directed at an angle of 64.0 degree above the negative x axis in the second quadrant. F2 has a magnitude of 7.00N and is directed at an angle of 52.8 degree below the negative x axis in the third ...
*September 20, 2008 by Poole*

**physics**

An automobile traveling along a straight road increases its speed from 89 ft/s to 104 ft/s in 180 ft. If the acceleration is constant, how much time elapses while the auto moves the 180 ft? Answer in units of s
*October 5, 2014 by Confused Student*

**Physics**

Suppose two boxes on a frictionless table are connected by a heavy cord of mass 1.0 kg. Calculate the acceleration (magnitude) of each box and the tension (magnitude) at each end of the cored, using the free-body diagrams shown in Figure 4-53. Assume FP = 44.0 N, ma = 11.0 kg...
*October 13, 2011 by Sydney*

**PHYSICS PLEASE HELP !!!!!**

A mass of 30 kg lies on a horizontal surface with a coefficient of static friction of 0.72 and a coefficient of kinetic friction of 0.31. If a force of 25.1 Newtons is applied parallel to the surface (+x direction if you prefer), what is the magnitude of the acceleration of ...
*October 25, 2011 by Amanda *

**Math**

A truck traveling at an average rate of 45 miles per hour leaves a rest stop. Fifteen minutes later a car traveling at an average rate of 60 miles per hour leaves the same rest stop traveling the same route. How long will it take for the car to catch up with the truck?
*February 12, 2013 by nick*

**physics**

A 25 g bullet traveling at 280 m/s passes completely through a wooden block, initially at rest on a smooth table. The block has a mass of 1000 g. The bullet emerges traveling in the same direction, but at 50 m/s. What percentage of total kinetic energy is lost in the process?
*November 15, 2011 by Rebecca*

**Physics **

A car is traveling at 14 m/s. How fast would the car need to go to double its kinetic energy? By what factor does the car's kinetic energy increase if its speed is doubled to 28 m/s? We only get 3 chances and I'm on my last one before I get the question wrong, help?
*August 8, 2011 by falcon306*

**Algebra I**

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

**Algebra**

How long does it take a care traveling 100 mph to catch up to a car traveling 80 mph
*May 27, 2012 by Al*

**Physics**

A car accelerates from rest at 2.3m/s^2 for 18 seconds, then decelerates to 15 m/s over 301 meters. A) How fast is the car moving at 18seconds? (Is it 2.3 m/s^2) B) How far does the car travel over the entire trip? (The m/s and m/s^2 is tripping me up) C) How long does it ...
*September 2, 2014 by Emily*

**Physical Science**

What is the kinetic energy of a 1850 kg car that is traveling at 58.0 km/h? B. How much work was done to give the car this kinetic energy assuming the car starts from rest? C. How much work must be done to stop the car?
*September 10, 2014 by Barbara*

**calculus**

A car leaves an intersection traveling east. Its position t sec later is given by x = t2 + t ft. At the same time, another car leaves the same intersection heading north, traveling y = t2 + 3t ft in t sec. Find the rate at which the distance between the two cars will be ...
*October 19, 2011 by sal*

**physics**

a 1.10 x 10 cubed kg car accelerates from rest for a time period of 5.0 sec. The magnitude of the acceleration is 4.60 m/s squared. determine the average power generated by the force that accelerates the vehicle
*November 16, 2010 by Derick*

**Physics**

A force of -9200 N is used to stop 1500 kg car traveling at 23 m/s. What braking distance is need to bring the car to a halt?
*September 19, 2007 by Anonymous*

**physics**

A 2100 kg car rounds a curve of 67 m banked at an angle of 13. If the car is traveling at 105 km/h, will a friction force be required? If so, in what direction?
*October 29, 2010 by Emma*

**Physics**

What is the impact speed when a car moving at 95km/h bumps into the rear of another car traveling in the same direction at 93km/h?
*October 12, 2011 by Sarah*

**physics**

A force of -9000 N is used to stop a 1500kg car traveling at 20 m/s. What braking distance is needed to bring the car to a halt?
*November 1, 2011 by Bobbie*

**physics**

if a car generates 18 hp when traveling at a steady 88 km/h, what must be the average force exerted on the car due to friction and air resistance
*December 9, 2011 by eli*

**Physics**

What is the impact speed when a car moving at 114.0 km/h bumps into the rear of another car traveling in the same direction at 104.5 km/h?
*January 26, 2012 by Paige*

**math**

Forces are applied to two ropes which are attached to the bumper of a stalled car. If F1 = 100 lbs at an angle of θ1 = 58 degrees, find the necessary magnitude and direction of force F2 so that the resultant force is 190 lbs in the direction shown.
*December 6, 2013 by nick*

**physics**

Part 1 A block of mass 4 kg, which has an initial speed of 8 m/s at time t = 0, slides on a horizontal surface.Find the magnitude of the work that must be done on the block to bring it to rest. Answer in units of J. Part 2 If a constant friction force of magnitude 5 Newtons is...
*February 25, 2011 by ally*

**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 still don't get it**

Given: g=9.81 m/s square. The parachute on a race car that weighs 8042 N opens at the end of a quarter-mile run when the car is traveling 35 m/s. What net retarding force must be supplied by the parachute to stop the car in a distance of 1020 m? Answer in units of N.
*February 25, 2008 by Anonymous*

**Physics -Impulse- part 2**

1) A 0.50 kg object is at rest. A 3.00 N force to the right acts on the object during a time interval of 1.50 s a) What is the impulse? b) What is the velocity of the object at the end of this time interval? 2) A 2250 kg car traveling to the west at 20.0 m/s slows down ...
*February 24, 2013 by Isis*

**algebra**

Car A leaves a certain point traveling at an average speed of 40 mph. 3 hours later, car B leaves the same point traveling at an average speed of 55 mph. How soon will B catch up to A? 4 6 8 10
*May 19, 2013 by Callie*

**physics**

Snow is falling vertically at a constant speed of 6.6 m/s. At what angle from the vertical do the snowflakes appear to be falling as viewed by the driver of a car traveling on a straight, level road with a speed of 66 km/h?
*September 16, 2009 by Nick*

**Physics**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...
*October 14, 2013 by Anonymous*

**PHYSICS (HELP)**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...
*October 14, 2013 by Anonymous*

**physics**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...
*October 14, 2013 by Anonymous*

**physics**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...
*October 15, 2013 by ss01*

**physics**

The curves on a race track are banked to make it easier for cars to go around the curves at high speed. Draw a free-body diagram of a car on a banked curve. From the motion diagram, find the direction of the acceleration. The acceleration is directed toward the center of the ...
*January 20, 2015 by mathew*

**physics**

A constant force of 20N is applied tangentially to a string wound on the rim of a 40 cm diameter wheel, initially at rest. (i) How much work does this force do as it turns the wheel through 45a? (3 %) (ii) If the wheel has mass 8.0 kg and radius of gyration 15 cm, how long ...
*July 20, 2010 by Oisin*

**PHYSICS**

#1.) A 3.0 kg computer printer is pushed across a desk at a rate of 0.6m/ s2 (towards the right). Determine the force applied to the printer #2.) If a 0.9 kg apple falls from a tree and hits the ground with a force of 8.82 N calculate the acceleration of the apple. #3.) ...
*February 3, 2013 by AMANDAAA*

**PHYSICS**

#1.) A 3.0 kg computer printer is pushed across a desk at a rate of 0.6m/ s2 (towards the right). Determine the force applied to the printer #2.) If a 0.9 kg apple falls from a tree and hits the ground with a force of 8.82 N calculate the acceleration of the apple. #3.) ...
*February 3, 2013 by AMANDAAA*

**physics**

6) CRITICAL THINKING: Kinematic equations are only valid for situations with constant acceleration. Using Newtons second law, explain some examples of non-constant acceleration?
*January 27, 2015 by Anonymous*

**Physics**

A dock worker loading crates on a ship finds that a 24 kg crate, initially at rest on a horizontal surface, requires a 64 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 46 N is required to keep it moving with a constant ...
*March 15, 2011 by Bill*

**Physics**

A car moving at a constant speed of 50km/h turns a corner, changing it's direction from north to west. What is it's change in velocity. What was the acceleration if the then took 5s
*March 25, 2014 by Chu*

**Physics**

The average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on Earth). Suppose a car is designed to accelerate at this rate. How much time would be required for the car to accelerate from rest to 59.1 miles per hour?
*September 20, 2012 by Kelly*

**Physics**

The average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on Earth). Suppose a car is designed to accelerate at this rate. How much time would be required for the car to accelerate from rest to 61.8 miles per hour?
*May 28, 2014 by Shaun*

**physics**

On a safari, a team of naturalists sets out toward a research station located 5.54 km away in a direction 47.9 north of east. After traveling in a straight line for 1.29 km, they stop and discover that they have been traveling 24.6 north of east, because their guide ...
*September 5, 2014 by Shant*

**Physics true false**

true false The speed of a particle is always positive. True False The average speed of a particle is equal to the magnitude of its average velocity. True False The acceleration of a particle can be non-zero when its speed is constant. True False When the average velocity of a ...
*February 26, 2013 by Robin *

**Physics**

A train traveling at a speed of 110 km/h uniformly decelerates for 20 seconds. During that time it travels 450 m. a. What is the acceleration ? = m/s2 b. What is its speed after the deceleration ? = km/h
*November 8, 2013 by Tom*

**physics**

a car is moving down a street at 55km/h.A child suddenly runs into the street. If it takes a driver 0.75s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
*February 4, 2012 by erika*

**Physics**

NASA, when it sends probes to other planets, uses what is known as a gravitational slingshot. This is when a probe uses the gravitational potential energy a planet to gain kinetic energy. Even though the probe and the planet are not physically colliding, one can treat this ...
*November 11, 2014 by Kimmy*

**Physics**

NASA, when it sends probes to other planets, uses what is known as a gravitational slingshot. This is when a probe uses the gravitational potential energy a planet to gain kinetic energy. Even though the probe and the planet are not physically colliding, one can treat this ...
*November 11, 2014 by Samantha*

**physics**

Which of the statements regarding this situation are true? Select all that apply. -In this simulation when the capacitor voltage is set to a positive value the top plate has a positive charge on it and the bottom plate has a negative charge on it. -In general, decreasing the ...
*January 28, 2012 by cpk101*

**Math Calculus 2**

At a certain instant an aircraft flying due east at 240 miles per hour passes directly over a car traveling due southeast at 60 miles per hour on a straight, level road. If the aircraft is flying at an altitude of .5mile, how fast is the distance between the aircraft and the ...
*October 22, 2012 by Steven*

**Physics**

a race car driver on a straight track starts the tryout from rest at t = 0 and x = 0. the car accelerates with an acceleration given by a(t) = 0.25t (m/s^2). how far eill the car travel in 12 secs?
*October 14, 2013 by Joe*

**physics**

Two forces,F1 and F2, act at a point. F1 has a magnitude of 8.00 N and is directed at an angle of 56.0 degrees above the negative x axis in the second quadrant. F2 has a magnitude of 5.00 N and is directed at an angle of 52.9 degrees below the negative x axis in the third ...
*May 30, 2011 by physics please describe process*

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