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May 1, 2016

Search: A car with an initial speed of 23.9 km/h ac-

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physics
A car tavels a distance of 100 m with a constant acceleration and average velocity of 20 m per second .The final velocity acquire D by the car is 25m per second .find the initial velocity and acceleration of car
July 2, 2013 by spoorthi.p

Physics
A car is parked 23.0 m directly south of a railroad crossing. A train is approaching the crossing from the west, heading directly east at a speed of 59.0 m/s. The train sounds a short blast of its 340-Hz horn when it reaches a point 23.0 m west of the crossing. What frequency ...
October 21, 2014 by Faune

physics
Two stones of different masses are thrown straight upward one on earth and on the moon (where gravity produces an acceleration of 1.67m/second squared) Both reach the same height. if the stone on the moon has an initial speed v, what was the initial speed of the stone on earth...
December 7, 2010 by first name

physics.
A car travels forward with constant velocity. It goes over a small stone, which gets stuck in the groove of a tire. The initial acceleration of the stone, as it leaves the surface of the road is, a)vertically up b)horizontally forward c)horizontally backwards d) zero e)greater...
December 28, 2006 by me

Algebra
Yes. The car will travel 40 miles in an hour. A certain Car Travels 14 miles in 21 minutes. If the car continues at the same speed how many miles can it go in 1 Hour One way to solve this problem is by setting up a proportion. Let x = the miles the car can go in one hour. 14...
June 26, 2007 by Ms. Sue

physics
A 28000 kg railroad freight car collides with a stationary caboose car. They couple together, and 20 percent of the initial kinetic energy is dissipated as heat, sound, vibrations, and so on. What is the mass of the caboose?
March 16, 2014 by Tully

physics
A car whose speed is 90km/hr rounds a curve 180m in radius that is properly banked for a speed of 45km/h. FIind the minimum coefficient of friction between tires and road that wil permit the car to make turn. I alreadly saw the same question in here. But they uses 'tan'. And ...
August 9, 2014 by Krishyl

physics
Let the radius of the circular segment be 92 m, the mass of the car 2393 kg, and the coefficient of the static friction between the road and the tire 0.9. Find the magnitude of the normal force N which the road exerts on the car at the opti- mal speed (the speed at which the ...
September 29, 2012 by mark

phy
An archer shoots an arrow horizontally at a target 14 m away. The arrow is aimed directly at the center of the target, but it hits 52 cm lower. 1-What was the initial speed of the arrow? ** is this the formula for finding t : y=h-1/2(gt^2)= 00.52-1/2(9.8t^2) t=0.3258 s initial...
July 6, 2011 by pop

Physics- impuse and force
A car is moving to the right with a speed of 20 m/s. A large SUV is moving to the left at a speed of 20 m/s. The SUV has a mass three times that of the small car. They have an totally inelastic head-on collision in an intersection. There are two passengers in each vehicle, one...
July 5, 2011 by Casey

Physics
A large air-filled 0.1-kg plastic ball is thrown up into the air with an initial speed of 16 m/s. At a height of 4.7 m, the ball's speed is 5 m/s. What fraction of its original energy has been lost to air friction? (Note that the initial height is taken to be zero.)
June 1, 2012 by Peter

physics
A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 214 m, and the car completes the turn in 40.0 s (Figure shows coordinate plane with point A on -y axis point C on +x axis and point B ...
March 6, 2012 by Emily

Math
JASON DRIVES 50 MI TO A TRAIN and then continues his trip with a 210 mi train ride. the car travels 20 mph slower than the train. if total travel time is 4 hr, find the average speed of the car and the average speed of the train.
March 2, 2016 by Sam

Physics
If you step on your car's brakes hard, the wheels stop turning (i.e., the wheels "lock") after 1.5 revolutions. At the same constant acceleration, how many revolutions do the wheels make before stopping if your initial speed is twice as high?
March 15, 2012 by Krista

Physics
1. A ball is launched from a cliff with an initial velcity of 10 m/s at an angle of 40 degrees above horizontal. If the ball lands 24 m away, determine the height of the cliff. 2. if the mass A is 1 kg and the mass of B is 6.0 kg, determine the acceleration of the system and ...
June 26, 2014 by Liz

Physics
When you take your 1200 kg car out for a spin, you go around a corner of radius 51 m with a speed of 12 m/s. The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static friction?
March 2, 2010 by Abby

Algebra 2
A car enters a interstate highway 15 mi north of the city. The car travels due north at an avrage speed of 62.5 mph. Write an equation to model the car's distance from the city after traveling for h hours.
April 9, 2010 by Carrie

math
The stopping distance of a car after the brakes are applied varies directly as the square of the speed r. If a car traveling 80 mph can stop in 360ft, how many feet will it take the same car to stoop when its traveling 50 mph?
September 17, 2010 by Kaegan

physics
A car was seen driving off the edge of a cliff at an angle of 10. above the horizontal. The cliff is 95. m high and the car impacted the ground at a distance of 156. m from the base of the cliff. The speed of the car as it left the cliff was closest to:
January 11, 2011 by noreen

physics
When you take your 1000-kg car out for a spin, you go around a corner of radius 57 m with a speed of 11 m/s. The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static friction?
March 6, 2011 by Randy

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

Physics
When you take your 1000- car out for a spin, you go around a corner of radius 57 with a speed of 19 . The coefficient of static friction between the car and the road is 0.88. Assuming your car doesn't skid, what is the force exerted on it by static friction?
November 3, 2011 by Chris

algebra
the stopping distance d of a car after the brakes are applied varies directly as the square of the speed r if a car travelling 80mph can stop in 360ft, how many feet will it take the same car to stop when it is travelling 70mph
December 13, 2011 by karon

physics
When you take your 1300-kg car out for a spin, you go around a corner of radius 57.7 m with a speed of 16.5 m/s. The coefficient of static friction between the car and the road is 0.93. Assuming your car doesn't skid, what is the force exerted on it by static friction?
April 12, 2012 by Anonymous

algebra
The stooping distance d of a car after the brakes are appied varies directly as the square root of the speed r. If a car traveling 40mph can stop in 90 ft., how many feet will it take the same car to stop when it is traveling 60 mph.
June 1, 2012 by ll

physics
When you take your 1200 kg car out for a spin, you go around a corner of radius 54.5 m with a speed of 16.2 m/s. The coefficient of static friction between the car and the road is 0.95. Assuming your car doesn't skid, what is the force exerted on it by static friction?
October 12, 2012 by Anonymous

physics
A car accelerates uniformly in a straight line from rest at the rate of 3.7 m/s2 . What is the speed of the car after it has traveled 67 m? Answer in units of m/s 014 (part 2 of 2) 10.0 points How long does it take the car to travel 67 m? Answer in units of s
October 27, 2014 by Anonymous

physics
Two spheres are launched horizontally from a 0.8 m high table. Sphere A is launched with an initial speed of 16 m/s. Sphere B is launched with an initial speed of 8 m/s.
February 20, 2014 by Anonymous

physics
A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure below. The length of the arc ABC is 210 m, and the car completes the turn in 38.0 s. (a) What is the acceleration when the car is at B located at an angle of 35.0...
October 24, 2011 by carlton

Physics
Driving in your car with a constant speed of v=13.0 m/s, you encounter a bump in the road that has a circular cross section. If the radius of curvature of the bump is r=33.2 m, calculate the force the car sear exerts on a 72.7 kg person as the car passes over the top of the ...
October 13, 2007 by Jack

physics
A racing car reaches a speed of 40 m/s. At this instant, it begins a uniform negative acceleration, using a parachute and a braking system, and comes to rest 5.0 s later. (a) Determine the acceleration of the car. (b) How far does the car travel after acceleration starts?
September 7, 2012 by Tamera

Physics
A 4.2 10^3 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 18.4◦ with the horizontal. An average frictional force of 4.110^3 N impedes the cars motion so that the cars speed at the bottom of the driveway is 4.9 m/s. The ...
December 12, 2012 by alice

physics
A shell is fired from the ground with an initial speed of 1.70 10 3 m/s (approximately five times the speed of sound) at an initial angle of 70.0 ◦ to the horizontal. The acceleration of gravity is 9.81 m/s 2 . a) Neglecting air resistance, find the ...
September 18, 2012 by Mara

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....
September 10, 2013 by youlife

mechanical science
11. In an accident a freeway sports car made skid marks 200 m long along the pavement. The police estimated the braking acceleration of the car to be 0.8g under the road conditions prevailing. Determine the speed of the sports car when the brakes were applied.
December 20, 2012 by anshuman kumar

Physics
A car of mass 900.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 49.7 km/hr (13.8 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up for air resistance and friction). Calculate ...
January 2, 2014 by Sam

Physics
A car of mass 900.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 49.7 km/hr (13.8 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up for air resistance and friction). Calculate ...
January 2, 2014 by Adam

physics
Consult Interactive Solution 2.22 before beginning this problem. A car is traveling along a straight road at a velocity of +38.8 m/s when its engine cuts out. For the next 2.01 seconds, the car slows down, and its average acceleration is . For the next 6.36 seconds, the car ...
December 16, 2015 by trish

physics
a ball is thrown horizontally -> from the roof of a building 45.0 meters tall and lands 24.0 meters from the base. what was the balls initial speed? OTHER QUESTION a shotputter throws the shot with an initial speed of 15.5 m/s @ 34 degrees. calculate the horizontal distance...
October 20, 2008 by michael

physics
A car drove off a cliff. The cliff was 8 ft high and the car landed 45 ft away from the edge of the cliff. What was the speed when the car left the cliff?
February 9, 2010 by Amy

Algebra Word Problems
when going more than 38 miles per hour the gas mileage of a certain car fits the model y=43.81 - 3.95x where x is the speed of the car in miles per hor and y is the miles per gallon of gas. Based on model what speed will the car average 15 miles per gallon
December 15, 2009 by mike

physics
A car is traveling along a straight road at a velocity of +32.7 m/s when its engine cuts out. For the next 1.04 seconds, the car slows down, and its average acceleration is . For the next 5.23 seconds, the car slows down further, and its average acceleration is . The velocity...
September 18, 2012 by gary

physics
A car is traveling along a straight road at a velocity of +27.7 m/s when its engine cuts out. For the next 1.94 seconds, the car slows down, and its average acceleration is . For the next 4.92 seconds, the car slows down further, and its average acceleration is . The velocity ...
September 9, 2014 by S

Phsics
A car is traveling along a straight road at a velocity of +38.8 m/s when its engine cuts out. For the next 2.01 seconds, the car slows down, and its average acceleration is . For the next 6.36 seconds, the car slows down further, and its average acceleration is . The velocity ...
December 16, 2015 by Courtney

determining speed
car leaves a 20 ft. skid mark how fast was the car traviling
January 12, 2011 by karl

physics
The car has a mass of 1200kg Calculate the kinetic of the car when it travels at a speed of 12 m/s.
February 16, 2012 by Dan

NSCI 110
a car that was initially moving at 25 m/s is accerlerated at 4.0 m/s^2 for 5.0 s. the final speed of the car is?
October 7, 2012 by ebony

Physics
A 1200.0-kg car speeds up from 16.0 m/s to 20.0 m/s. How much work was done on the car to increase its speed?
March 5, 2013 by Sara

Physics
A car rounds a curve with a radius of 25 m at a speed 30 m/s. What is the centripetal acceleration of the car?
September 22, 2013 by Alison

physics
At the instant a traffic light turns green, a car starts from rest with a given constant acceleration 0.5 m/s^2. just as the light turns green, a bus, traveling with a given cinstant speed 16.0 m/s, passes the car. The car speeds up and passes the bus some time later. How far ...
January 24, 2012 by qwertzuiop

physics
At the instant a traffic light turns green, a car starts from rest with a given constant acceleration 0.5 m/s^2. just as the light turns green, a bus, traveling with a given cinstant speed 16.0 m/s, passes the car. The car speeds up and passes the bus some time later. How far ...
January 24, 2012 by qwertzuiop

Physics
An electron is projected, with an initial speed of vi=1.10e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its speed instantaneously equal to twice its initial ...
February 28, 2013 by bethel

Physics
An electron is projected, with an initial speed of v= 2.18e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its speed instantaneously equal to twice its initial ...
March 2, 2013 by Phy

physics
An electron is projected, with an initial speed of vi=1.38e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its speed instantaneously equal to twice its initial ...
March 4, 2013 by x

Physics
An electron is projected, with an initial speed of vi=2.06e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its speed instantaneously equal to twice its initial ...
March 5, 2013 by P

physics
How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than when the car is stationary? The speed of sound is 343 m/s. A)42.5 Hz B)54.5 Hz C)61.8 Hz D)65.4 Hz v=16 fs=583 vs=343 (16+0)/16 Im not even gonna post the rest because quite ...
April 7, 2008 by Jon

Algebra 2
The stopping distance d of a car after the brakes are applied varies directly as the square of hte speed r. If a car travelling 70mph can stop in 270ft, how many feet will it take the same car to stop when it is travelling 60mph? Thank you.
March 16, 2011 by Esther

algebra 2
The stopping distance d of a car after the brakes are applied varies directly as the square of hte speed r. If a car travelling 70mph can stop in 270ft, how many feet will it take the same car to stop when it is travelling 60mph? Thank you.
March 16, 2011 by estherw

algebra 2
The stopping distance d of a car after the brakes are applied varies directly as the square of hte speed r. If a car travelling 70mph can stop in 270ft, how many feet will it take the same car to stop when it is travelling 60mph? Thank you.
March 17, 2011 by Esther

physics
A 640-kg racing car completes one lap in 14.3 s around a circular track with a radius of 45.0 m. The car moves at constant speed. (a) What is the acceleration of the car? m/s2 (b) What force must the track exert on the tires to produce this acceleration?
January 6, 2012 by bob

circular motion
When you take your 1300-kg car out for a spin, you go around a corner of radius 57.7 m with a speed of 16.5 m/s. The coefficient of static friction between the car and the road is 0.93. Assuming your car doesn't skid, what is the force exerted on it by static friction?
April 12, 2012 by Anonymous

Physics
A 640-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?(b) What force must the track exert on the tires to produce this acceleration?
October 25, 2012 by Jamal

Math
A 605-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? (b) What force must the track exert on the tires to produce this acceleration?
December 3, 2012 by Noah

physics
A 605-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? (b) What force must the track exert on the tires to produce this acceleration?
December 7, 2012 by Noah

college
A car accelerates at a rate of 0.6 m/s2. How long does it take for this car to from a speed of 55 mi/h to 60 mi/h?
September 19, 2010 by Maggie

college
A car accelerates at a rate of 0.6 m/s2. How long does it take for this car to go from a speed of 55 mi/h to 60 mi/h?
September 19, 2010 by Maggie

physics
A 1,600 kg car is traveling at a speed of 12.5 m/s. What is the kinetic energy of the car?
November 15, 2012 by austin

physics
The security alarm on a parked car goes off and produces a frequency of 1370 Hz. The speed of sound is 343 m/s. As you drive toward this parked car, pass it, and drive away, you observe the frequency to change by 147 Hz. At what speed are you driving?
January 28, 2013 by Anonymous

physics
A car starts from rest and accelerates to a speed of 25 m/s in a time of 6 seconds. What os the acceleration of this car?
October 1, 2010 by cameron

Physics
A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?
November 27, 2012 by Joan

Physics
A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?
November 28, 2012 by M

Physics
A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?
November 30, 2012 by Joe

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

science
A car is traveling down the road at 25 m/s,and then increases their speed to 45 m/s in 5 seconds. What is this car's acceleration?
September 13, 2013 by teddy

Physics
A car experiences a constant acceleration of 2.3 m/s2. How long does it take (in s) for the car's speed to increase from 6.6 m/s to 17.9 m/s?
January 29, 2014 by Chris

mathematics
If a car travels at a constant speed of 112 km/h, How far will the car travel in 15 minutes.
March 6, 2014 by melony henry

physics
A car P is moving with uniform speed of 5m/s towards a carriage of mass 9kg at rest kept on the rails at point B. the height of AC is 120m.cannon balls of 1kg are fired from the car with an initial velocity of 100m/s at an angle 30 degree with the horizontal.the first cannon ...
January 16, 2011 by sreeram

physics
Proper design of automobile braking systems must account for heat buildup under heaving braking. Calculate the thermal energy dissipated from brakes in a 1460-kg car that descends a 15.5 hill. The car begins braking when its speed is 92 km/h and slows down to a speed of 28 km...
February 14, 2011 by Johnathon

Physics
Proper design of automobile braking systems must account for heat buildup under heaving braking. Calculate the thermal energy dissipated from brakes in a 1360-kg car that descends a 13.5 hill. The car begins braking when its speed is 88 km/h and slows down to a speed of 36 km...
February 12, 2013 by Thomas

grade 7 math
Uniform Motion Related Problem Chester drove his car at 8:00 a.m. at speed of 45 km/hr. At 9:15a.m. Michael followed with his car. What should be Michael's speed so as to be able to overtake Chester at 1:00 p.m.? How far has Chester travelled when Michael overtook him?
January 19, 2015 by Krystal

Physics
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 512 Hz and has a speed of 28.0 m/s. The motorcycle has a speed of 13.0 m/s. What frequency does the motorcyclist hear?
November 22, 2011 by Cooper

physics hw
A 300. kg roller coaster car is traveling at a constant speed of 15 m/s over a hill with a radius of curvature of 30. m. b. What is the normal force acting on the car at the top of the hill? c. Assume that the car is at the intersection of the radius and the hill and that a ...
May 1, 2011 by robert

Physics Lab
Collision derivation problem. A car is released from rest on a frictionless inclined plane. Assume h/L is approximately equal to y/x. equations. If the car has a mass of 0.2 kg, the ratio of height to width of the ramp is 11/110, the initial displacement is 2.25 m, and the ...
July 20, 2013 by Tiff

physics
A train is traveling up a 5.2 incline at a speed of 3.09 m/s when the last car breaks free and begins to coast without friction. (a) How long does it take for the last car to come to rest momentarily? (b) How far did the last car travel before momentarily coming to rest?
September 20, 2009 by jawn

physics
A train is traveling up a 3.6 incline at a speed of 3.30 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily? and how far did the last car travel before momentarily coming to rest?
October 3, 2010 by Anonymous

physics
A driver of a car traveling at 15.9 m/s applies the brakes, causing a uniform deceleration of 1.7 m/s2. How long does it take the car to accelerate to a final speed of 13.0 m/s? Answer in units of s. b) How far has the car moved during the braking period? Answer in units of m.
March 20, 2011 by maria

physics
The loaded car of a roller coaster has mass M = 320 kg. It goes over the hig a speed v of 21.4 m/s. The radius of curvature R of the hill is 62.3m (a) What is the force (N) that the track must exert on the car? (positive is (b) What must be the force (N) that the car exerts on...
August 6, 2011 by waqas

Physics
An 800-kg car traveling in a straight line at a speed of 30 m/s applies its brakes. During braking, there is a net force of 2000 N in the horizontal direction on the car. What distance will the car move from the time it applies its brakes until it has stopped?
February 13, 2012 by Jub jub

physics
A 1,000 kg car accelerates uniformly to double its speed from 13.5 ms in 5.77 s. What net force acted on this car?
April 3, 2011 by nofa

physical science
A car travels at a constant speed of 60 km/h for 3.5 hours. What is the total distance that the car has traveled?
September 13, 2011 by kannon

Physics
A car has a velocity of 10m/s it now accelerate at 1m/s square, for 1/4.find the final speed of the car.
October 2, 2011 by Anonymous

maths
a car travels at a speed of 35mph how long would it take a car to travel 7miles
October 3, 2011 by chloe

physics
(a) What is the acceleration of a car in m/s that doubles its speed from 36.0 km/h in 5.00 s? (b) What net force acted on this car if its mass was 1,000.0 kg?
January 22, 2012 by sarah

trigonometry
The wheels of a car have radius 11 in. and are rotating at 800 rpm. Find the speed of the car in mi/h. mi/h
November 26, 2012 by monic

PHYSICS - PLEASE HELP
A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?
November 28, 2012 by Mary

physics
A 1500.0 kg car accelerates uniformly to double its speed from 35.9 km/h in 4.74 s. What net force acted on this car?
February 5, 2013 by Emily

Science
A race car, moves at a constant speed around an oval track. Is the car accelerating? Why or why not?
February 23, 2013 by Mia

phy 231
A car of mass 860.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 39.6 km/hr (11.0 m/s), the net power which the engine supplies is 5700.0 W (in addition to the extra power required to make up for air resistance and friction). Calculate ...
February 14, 2016 by Andrea

Physics
A car is travelling along a highway with a speed of 25 m/s when the driver sees an obstruction 1.80*10^2 m directly ahead. It takes the driver 0.80s to react and begin braking. a) How far does the car travel before it begins to slow down? b) How long will it take the car to ...
March 4, 2013 by Mike

Physics: mechanics
A 250g bullet with a speed of 500m/s passes through the center of a 1.5kg square wooden block [ side length 18cm] at rest upon a horizontal frictionless surface. As it exits the block, the bullet has a speed of 150m/s. A) find the initial speed of the center of mass of the ...
October 20, 2014 by Michelle

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