Saturday

December 10, 2016
Number of results: 39,161

**physics**

The engine of a racing car of mass m delivers a constant power P at full throttle. Assuming that the friction drag force on the car is proportional to the velocity: Fdrag = -cv where c is a positive constant.What maximum speed can be attained by the car on level ground?

*February 19, 2015 by Anonymous*

**PHYSICS**

A car with a uniform speed of 60km/h enters a circular flat curve whose radius is .50 km. If the friction between the road and the car's tires can supply a central accekeration of 1.25 m/s^2, dies the car negotiate the curve safely? Prove your answer.

*September 12, 2015 by NotYourTyn*

**physics**

A rock climber stands on top of a 56m -high cliff overhanging a pool of water. He throws two stones vertically downward 1.0s apart and observes that they cause a single splash. The initial speed of the first stone was 2.5(m/s) How long after the release of the first stone does...

*October 2, 2012 by Nicole*

**Algebra**

While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If the a passenger experiences a force of 100.8 newtons when the car is moving at a speed ...

*March 16, 2010 by Anonymous*

**physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the ground? 3) What is ...

*August 29, 2012 by Dante*

**pyhsics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 36.0 m/s and an initial vertical velocity of 21.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the ground? 3) What is ...

*September 8, 2012 by ali*

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...

*September 11, 2012 by Kayla*

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...

*September 11, 2012 by Kayla*

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...

*September 11, 2012 by Kayla*

**Physics**

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38° What is the ...

*September 11, 2012 by Kayla*

**physics**

The tires of a car make 58 revolutions as the car reduces its speed uniformly from 92 to 33 . The tires have a diameter of 0.86 . What was the angular acceleration of the tires? If the car continues to decelerate at this rate, how much more time is required for it to stop?

*May 26, 2011 by juana*

**Physics **

The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration -5.40 m/s2 for 4.40 s, making straight skid marks 63.1 m long ending at the tree. With what speed does the car then strike the tree?

*January 22, 2015 by Chad *

**Physics**

A car is traveling around a horizontal circular track with radius r = 190.0 m at a constant speed v = 22.0 m/s as shown. The angle èA = 15.0° above the x axis, and the angle èB = 63.0° below the x axis. 1) What is the magnitude of the car’s acceleration? 2) What is the x...

*January 19, 2013 by Anonymous*

**Physics**

A soccer ball is kicked with an initial speed of 12.2 m/s. After 0.497 s it is at its highest point. What was its initial direction of motion?

*December 8, 2009 by Robert C*

**Physics**

A soccer ball is kicked with the initial speed of 10.7m/s . After 0.780s it is at its highest point. What was its initial direction of motion?

*September 2, 2013 by Roxy*

**Physics **

During an auto race, a car with a speed of 85m/s acceleration passed another car rate of 4.0m/s^2 for 3.5s. How far does the car travel during this time? Okay so I used D= Vi-t+(1/2)t^2 D= 85m-4.0m/s^2+(1/2)3.5^2 D= 87.125 ?

*September 28, 2016 by Math CAN Y0U CHECK MY WORK?*

**physics**

Proper design of automobile braking systems must account for heat buildup under heavy breaking. Calculate the thermal energy dissipated from brakes in a 1500 kg car that descends a 17° hill. The car begins braking when its speed is 95 km/h and slows to a speed of 35 km/h in a...

*November 5, 2012 by Lauria*

**physics**

A tornado lifts a car to a height of 125m above the ground. The tornado flings the car horizontally with a speed of 90.0 m/s. How long does the car take to reach the ground?

*October 26, 2010 by carmen *

**General Physics 1**

1) A car moving with an initial velocity of 29.6 m/s decreases to a velocity of 17.9 m/s over a time interval of 4.08 seconds. (a.) What is the average acceleration of the car during this time? (b.) Assuming the acceleration is constant, how far did the car travel during this ...

*June 16, 2014 by Kyle*

**Physics**

A car travels at a constant speed around a circular track whose radius is 2.5 km. The car goes once around the track in 430 s. What is the magnitude of the centripetal acceleration of the car? m/s2

*April 2, 2008 by Will G*

**Physics**

A car travels at a constant speed around a circular track whose radius is 2.5 km. The car goes once around the track in 430 s. What is the magnitude of the centripetal acceleration of the car?

*April 2, 2008 by Tasha*

**PHYSICS**

A car travels at a constant speed around a circular track whose radius is 3.1 km. The car goes once around the track in 280 s. What is the magnitude of the centripetal acceleration of the car?

*September 30, 2010 by Joshua*

**Physics**

A car travels at a constant speed around a circular track whose radius is 2.9 km. The car goes once around the track in 380 s. What is the magnitude of the centripetal acceleration of the car?

*October 23, 2010 by Angela *

**physics**

A car travels at a constant speed around a circular track whose radius is 2.60 km. The car goes once around the track in 344 s. What is the magnitude of the centripetal acceleration of the car?

*February 13, 2012 by Joe*

**physics**

A car accelerates uniformly in a straight line from rest at the rate of 3.2 m/s2. What is the speed of the car after it has traveled 58 m? Answer in units of m/s How long does it take the car to travel 58 m? Answer in units of s

*October 8, 2012 by Jordan Adams*

**physics**

A car travels at a constant speed around a circular track whose radius is 2.1 km. The car goes once around the track in 320 s. What is the magnitude of the centripetal acceleration of the car? 1 m/s2

*November 6, 2012 by Anonymous*

**PHYSICS**

A car travels at a constant speed around a circular track whose radius is 2.82 km. The car goes once around the track in 364 s. What is the magnitude of the centripetal acceleration of the car?

*October 12, 2015 by Anonymous*

**Physics**

A car travels at a constant speed around a circular track whose radius is 2.8 km. The car goes once around the track in 430 s. What is the magnitude of the centripetal acceleration of the car?

*January 21, 2016 by Melanie*

**Physics**

A car travels at a constant speed around a circular track whose radius is 2.59 km. The car goes once around the track in 380 s. What is the magnitude of the centripetal acceleration of the car?

*March 29, 2016 by Emily*

**physics**

A car travels at a constant speed around a circular track whose radius is 2.87 km. The car goes once around the track in 332 s. What is the magnitude of the centripetal acceleration of the car?

*October 31, 2016 by BrookeNeed*

**physics**

Two cars both travel along a straight road Northbound. At t = 0, the car 1 is 190.6 m further north than car 2. Also at t = 0, car 1 is travelling at 24.3 m/s, and car 2 is travelling at 5.7 m/s. Car 1 is slowing down with an acceleration of magnitude 0.28 while car 2 is ...

*September 19, 2012 by Ty*

**dynamics**

a motorcycle traffic police starts from rest at point A two seconds after a car speeding at the constant rate of 120 km/h passes point A (where speed limit is 100 km/h only) if the policeman accelerates at the rate of 6 m/s^2 until he reaches the speed of 150 km/h and ...

*April 1, 2013 by mahdi*

**Physics**

A car starts from rest and accelerates at 5 m/s^2 for 4 s, then maintains that velocity for 3 seconds, then decelerates at the rate of 2m/s^2 for 3 seconds. a) what is the final speed of the car? b) how far does the car travel? a) v = v_0 +at =0+2(3)= 6m/s Would I use the part...

*September 11, 2007 by Tammy*

**Physics 2414**

A 1000 kg car can accelerate from rest to v = 85 km/hr in a time t = 7.4s. If, instead the power of the car is smaller by a factor of .4 and the car accelerates for the same amount of time, by what factor will the maximum speed decrease?

*March 31, 2011 by Aestas*

**physics**

A 1,500 kg car starts from rest and accelerates to a speed of 12 m/s over a distance of 68 m a) calculate the total work on the car b) calculate the net force that caused the car to accelerate (constant force)

*May 4, 2014 by cee*

**physical science**

A car travels at a constant speed around a circular track whose radius is 3.5 km.The car goes once around the track in 400 s.What is the magnitude of the centripetal acceleration of the car?

*December 16, 2015 by nalim*

**Physics **

A car moves with 60km/h in first one hour and with 80km/h in next half an hour. Find 1. Total distance travelled by the car. 2. average speed of car in total 1.5 hours.

*September 7, 2016 by Sakshi*

**Physics**

A disgruntled physics student sees the front end of his teacher's car below him at the base of a building. If the student is 5.0 m high above the car which is 3.0 m long and traveling only 3m/s to the right, will the apple of the student hit the teacher's car? What is the ...

*June 24, 2014 by VAN*

**Physics**

A braking system is used to prevent the car travelling faster than 27 m s–1.The car and passengers shown in the diagram have a total mass of 750 kg. The length of track from P to Q is 80 m. Calculate the average braking force that would be required if the speed of the car is...

*February 16, 2011 by tania*

**Physics**

A car of mass 1530 kg traveling at 27.0 m/s is at the foot of a hill that rises 115 m in 4.40 km. At the top of the hill, the speed of the car is 6.0 m/s. Find the average power delivered by the car's engine, neglecting any frictional losses I got 8145.7 watts but that is not ...

*October 12, 2016 by Trish*

**physics**

The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of -5.6m/s for 4.20s marking straight skid marks 62.4m long ending at the tree with what speed does the car strike the tree?

*May 4, 2016 by Chansa*

**physics **

The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with an acceleration of - 5.6m/s for 4.20s marking straight skid marks 62.4m long ending at the tree.With what speed does the car strike the tree?

*May 7, 2016 by Mathews *

**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*

**math**

A race car driver starts along a 50-mile race course traveling at an average speed of 90 mph. Fifteen minutes later a second driver starts along the same course at an average speed of 120 mph. Will the second car overtake the first car before the drivers reach the end of the ...

*July 28, 2011 by Anonymous*

**algebra**

The stopping distance d of a car after the brakes are applied directly as the square of the speed r. If a car traveling 80mph can stop in 360ft, how many feet will it take the same car to stop when it is traveling 90mph

*November 17, 2011 by lisa*

**Physics **

A car of weight 1.4*10^4N is moving up an incline at a constant speed of 6.2 m/s . The incline makes an angle of 5.0 to the horizontal. A frictional force of 600 N acts on the car in opposite direction. State the net force of the car

*December 4, 2016 by Ashlin*

**Physics**

At an accident scene on a level road, investigators measure a car's skid mark to be 68 m long. It was a rainy day and the coefficient of friction was estimated to be 0.40. Using the work-energy theorem determine the speed of the car when the driver slammed on (and locked) the ...

*February 22, 2015 by Jennifer*

**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**

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.**

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*

**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*

**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 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**

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**

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- 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*

**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**

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*

**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**

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*

**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*

**Algebra 2**

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 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 the 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 the 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 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**

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**

A car is traveling along a straight road at a velocity of +35.1 m/s when its engine cuts out. For the next 1.95 seconds, the car slows down, and its average acceleration is . For the next 6.52 seconds, the car slows down further, and its average acceleration is . The velocity ...

*September 20, 2016 by Tamara*

**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 4.1×10^3 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.9 m/s. The ...

*December 12, 2012 by alice*

**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*

**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**

A car of mass 920.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 48.2 km/hr (13.4 m/s), the net power which the engine supplies is 5900.0 W (in addition to the extra power required to make up for air resistance and friction). Calculate ...

*May 31, 2016 by Sunny*

**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**

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*

**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 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*

**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*