Saturday

July 4, 2015

July 4, 2015

Number of results: 63,628

**Physics**

An electric vehicle starts from rest and accelerates at a rate of 3.0 m/s2 in a straight line until it reaches a speed of 26 m/s. The vehicle then slows at a constant rate of 1.0 m/s2 until it stops. a)How much time elapses from start to stop? b)How far does the vehicle travel...
*September 3, 2009 by Nick*

**Physics**

An electric vehicle starts from rest and accelerates at a rate of 2.3 m/s2 in a straight line until it reaches a speed of 17 m/s. The vehicle then slows at a constant rate of 1.4 m/s2 until it stops. (a) How much time elapses from start to stop? (b) How far does the vehicle ...
*January 16, 2011 by Ethan*

**Engineering science**

A vehicle with a mass of 1200 kg accelerates uniformly from rest upwards with an incline of 1:25 and reaches a speed of 72 km/h after 2 minutes,calculate: 1.The kineyic energy of the vehicle after 2 minutes 2.The potential energy of the vehicle after 2 minutes
*May 26, 2013 by Ayanda*

**physics**

A vehicle accelerates from rest at 6.68 m/s/s for 4.1 s. What is the final speed of the vehicle?
*October 4, 2012 by Victoria*

**Help! Calculus**

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...
*November 6, 2013 by Kimmie*

**calculus HELP!**

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...
*November 6, 2013 by Kimmie*

**science**

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...
*November 6, 2013 by Jenna*

**physics**

A vehicle with a mass of 2 tons travels on a horizontal road at a speed of 126km/h.The driver notices a donkey at the side of the road and decides to reduce speed. The brakes are applied and the vehicle slows down to 72km/h after 5 seconds. Calculate the acceleration of the ...
*March 6, 2013 by leslie*

**Physics**

A truck on a straight road starts from rest and accelerates at 3.0 m/s2 until it reaches a speed of 18.1 m/s. Then the truck travels for 24.5 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.7 s. (a) How long is the ...
*September 10, 2013 by Kelsey*

**physics**

A vehicle with a mass of 2 tons travels on a horizontal road at a speed of 126km/h.The driver notices a donkey at the side of the road and decides to reduce speed. The brakes are applied and the vehicle slows down to 72km/h after 5 seconds. Calculate the distance travelled ...
*March 6, 2013 by leslie*

**Physics 1**

A subway train starts from rest at a station and accelerates at a rate of 1.60m/s^2 for 14.0 s. It runs at constant speed for 70.0 s and slows down at a rate of 3.50m/s^2 until it stops at the next station. What is the total distance covered?
*September 13, 2007 by Douchan*

**Physics**

A subway train starts from rest at a station and accelerates at a rate of 1.60 m/s^2 for 14.0 s . It runs at constant speed for 70.0 s} and slows down at a rate of 3.50m/s^2 until it stops at the next station. Find the total distance covered.
*September 1, 2010 by Ceci*

**physics**

An astronaut is traveling in a space vehicle moving at 0.520c relative to the Earth. The astronaut measures her pulse rate at 74.0 beats per minute. Signals generated by the astronaut's pulse are radioed to the Earth when the vehicle is moving in a direction perpendicular to ...
*October 10, 2014 by sara*

**Physics**

an ambulance starts its motion from rest at a hospital and accelerates at a rate of 1.60 m/s^2 for 14.0 s. after that, it travels at constant speed for 70.0 s, and it the slows down at a rate of 3.5 m/s^2 until it stops (vf=o m/s) at the accident seen. find the total distance...
*September 29, 2012 by 010203*

**Physics**

A bus starts from rest at a bus stop and accelerates at a rate of 1.12 m/s^2 for 11.0s. It runs at constant speed for 80.0 s and slows at a rate 1.20 m/s^2 until it stops at the next bus stop. (a) What is the maximum speed attained. (b) Find the total distance covered.
*March 8, 2011 by Paul*

**COLLEGE PHYSICS**

A 1100kg car starts from rest, accelerates for 5 seconds. The magnitude of acceleration is (a)= 4.6m/s2. find the average power generated by the net force that accelerates the vehicle? what do i do here i know that F=ma= 1100x4.6=5060=F and Wnet = 1/2mvf2-1/2mvi2 since it ...
*October 18, 2007 by natali*

**Physics**

A subway train starts from rest at a station and accelerates at a rate of 1.60 m/s^2 for 14.0 s. It runs at constant speed for 70.0 s and slows down at a rate of 3.50 m/s^2 until it stops at the next station. Find the total distance covered? so far I figured out that I have x=...
*June 4, 2009 by Sarah*

**physics**

A truck on a straight road starts from rest and accelerates at 2.0 m/s2 until it reaches a speed of 20 m/s. Then the truck travels for 20 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.0 s. (a) How long is the truck ...
*January 22, 2012 by seanso*

**Physics**

A subway train starts from rest at a station and accelerates at a rate of 1.50m/s^2 for 13.3s . It runs at constant speed for 71.0s and slows down at a rate of 3.48m/s^2 until it stops at the next station. Find the total distance covered. Express your final answer in kilometers
*January 17, 2012 by Kim*

**Physics**

A subway train starts from rest at a station and accelerates at a rate of 1.50m/s^2 for 13.3s . It runs at constant speed for 71.0s and slows down at a rate of 3.48m/s^2 until it stops at the next station. Find the total distance covered. Express your final answer in kilometers
*January 17, 2012 by Kim*

**science-reasoning**

in 5 seconds, a car moving in a straight line increases it's speed from 50km/h to 65km/h, while a truck goes from rest to 15km/h in a straight line. which undergoes greater acceleration? what is the acceleration of each vehicle?
*October 20, 2007 by Drew*

**Physics**

A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers (see figure). (a) If the vehicle has a speed of 22.0 m/s at point A, what is the force of the track on the vehicle at this point? (b) What is the maximum speed the vehicle can have at point B in ...
*November 4, 2010 by Rose*

**Physics**

The first stage of a space vehicle consumed fuel and oxidizer at the rate of 1.65 104 kg/s with an exhaust speed of 2.55 103 m/s. (a) Calculate the thrust produced by this engine. (b) Find the acceleration the vehicle had just as it lifted off the launch pad on the Earth, ...
*November 5, 2010 by Shaden*

**physics**

A roller-coaster vehicle has a mass of 400 kg when fully loaded with passengers. r1 = 11 m and r2 = 17 m. If the vehicle has a speed of 17 m/s at A, what is the magnitude of the force that the track exerts on the vehicle at this point?
*October 4, 2012 by Emily *

**Physics**

A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers (see figure). (a) If the vehicle has a speed of 22.0 m/s at point A, what is the force of the track on the vehicle at this point? (b) What is the maximum speed the vehicle can have at point B in ...
*November 4, 2010 by Rose*

**applied maths**

A tram starts from rest atone station and comes to a stop one minute later at the next. It accelerates uniformly at 2m/s2 until it reaches a speed of 20m/s. It travels at this constant speed for a certain time until it decelerates back to rest at 4m/s2. Find the average ...
*September 10, 2011 by Anonymous*

**physical science**

A moving vehicle changes speed from 10 m/s to 35 m/s in only 5 seconds. What would be the acceleration rate of this vehicle?
*September 7, 2011 by Ron*

**physics**

a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, until it reaches a halt. what distance does ...
*June 10, 2013 by Anonymous*

**physics**

a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, until it reaches a halt. what distance does ...
*June 10, 2013 by Anonymous*

**physics**

a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, until it reaches a halt. what distance does ...
*June 10, 2013 by Anonymous*

**physics**

a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, until it reaches a halt. what distance does ...
*June 10, 2013 by Anonymous*

**physics**

a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, until it reaches a halt. what distance does ...
*June 10, 2013 by Anonymous*

**physics**

a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, until it reaches a halt. what distance does ...
*June 10, 2013 by heaven*

**physics**

a train starts from rest and accelerates unifotmly, until it has travled 3.7 km and acquired a velocity of 30 m/s. the train then moves at a constant velocity of 30 m/s for 410 s. the train then slows down uniformly at 0.065 m/s^2, until it reaches a halt. what distance does ...
*June 10, 2013 by heaven*

**physics**

Calculate the average velocity for a remote controlled vehicle that starts with a speed of 1.0 m/s [forward] and then accelerates at 0.08 m/s2 [backward] for 4.0 s.
*June 3, 2014 by grey*

**physics**

Calculate the average velocity for a remote controlled vehicle that starts with a speed of 1.0 m/s [forward] and then accelerates at 0.08 m/s2 [backward] for 4.0 s.
*June 6, 2014 by grey*

**AP physics**

Lucy is using a programmable treadmill. She inputs a top speed into the treadmill and presses "start." The treadmill accelerates from rest at 0.100 m/s2 until it reaches that speed, after which it stays at that constant speed. Later, when she is getting tired, she hits the "...
*October 1, 2012 by Philip*

**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 fullback preparing to carry the football starts from rest and accelerates straight ahead. He is handed the ball just before he reaches the line of scrimmage. Assume that the fullback accelerates uniformly (even during the handoff), reaching the line with a velocity of 7.96 m...
*May 24, 2015 by Stacie*

**physics**

A vehicle with an initial displacement of 10.om and an initial velocity of 16.0 m/s accelerates at an average rate of 0.50 m/s2 for 4.0 s. What is the vehicle's displacement after 4.0 s?
*November 30, 2011 by terri*

**physics**

a particle is moving in a straight line the particle starts with speed 5ms and accelerates at a constant rate of 2ms for 8s it then decelerates at a constant rate coming to rest in a further 12s find the total distance during 20s it is 230 but i dont understand how
*October 9, 2014 by Sam*

**Physics**

A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 32.0 m/s. Then the truck travels for 76.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00 s. What is the average ...
*January 28, 2014 by Anonymous*

**physics**

A subway train starts from rest at a station and accelerates at a rate of 1.60 m/s2 for 14.0s. It runs at a constant speed for 70.0 s and then slows down at a rate of -3.50 m/s2 until it stops at the next station. a) Sketch a position vs. time graph for this problem. b) Sketch...
*June 4, 2012 by cody*

**College Physics!!!**

A truck on a straight road starts from rest accelerating at 2.0 m/s2 until it reaches a speed of 20 m/s. Then the truck travels for 20 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.0 s. What is the average velocity ...
*October 6, 2008 by Steph*

**Calculus**

A vehicle moves along a straight path with a speed of 4m/s. A searchlight is located on the ground 20m from the path and is kept focused on the vehicle. At what rate (in rad/s) is the searchlight rotating when the vehicle is 15 from the point on the path cloest to the ...
*March 30, 2010 by sh*

**Maths/Physics**

Which of these statements are true... I think (1)and (5) are correct 1)A reversing vehicle must have negative velocity 2) A stationary object must have zero position 3)Two vehicles trvelling at the same speed at the same instant of time on the same road must have the same ...
*March 23, 2008 by leo*

**Velocity**

Which of these statements are true... I think (1)and (5) are correct 1)A reversing vehicle must have negative velocity 2) A stationary object must have zero position 3)Two vehicles trvelling at the same speed at the same instant of time on the same road must have the same ...
*March 23, 2008 by leo*

**science**

A vehicle starts from rest and accelerates with a constant acceleration, covering 200m in 5s. it then continues at a constant velocity for 300m before decelerating with a constant 2m/s^2 deceleration to a stop. what is the maximum speed attained, total time traveled, total ...
*September 9, 2014 by annie*

**physics**

The above graph represents the motion of two vehicles: A and B What is the acceleration of vehicle A during the first 5.0 s? Calculate the distance between vehicle A and B after 6.0 s? What is the instantaneous acceleration of vehicle A at the 10.0 s mark? What is the average ...
*June 3, 2014 by grey*

**Physics**

A football player, starting from rest at the line of scrimmage, accelerates along a straight line for a time of 1.5 s. Then, during a negligible amount of time, he changes the magnitude of his acceleration to a value of 1.4 m/s2. With this acceleration, he continues in the ...
*September 26, 2010 by Amanda*

**physics**

A car and a motorcycle start from rest at the same time on a straight section of the road. However, the motorcycle starts 29.6 m behind the car. The car accelerates at a uniform rate of 3.9 m/s^2 while the motorcycle accelerates at a constant rate of 4.2 m/s^2. How much time ...
*December 2, 2009 by Alex*

**physics**

By how much does the speed of a vehicle moving in a straight line change each second when it is accelerating at 4 m/s2?
*October 3, 2010 by kaitlyn*

**Physics**

A police car is at rest beside a road, looking for speeders. A car passes going at a constant speed of 30.0 m/s. The police car starts up 4 seconds later and accelerates at 2 m/s sq. until it reaches a speed of 40m. If the police car maintains this speed until it catches up ...
*December 18, 2012 by Emily*

**Calculus Help **

A high-speed bullet train accelerates and decelerates at the rate of 4 ft/s2. Its maximum cruising speed is 90 mi/h. (Round your answers to three decimal places.) (a) What is the maximum distance the train can travel if it accelerates from rest until it reaches its cruising ...
*April 19, 2014 by Ali*

**Physics**

A truck on a straight road starts from rest and accelerates at 2.8 m/s^2 until it reaches a speed of 16 m/s. Then the truck travels for 16s at constant speed until the brakes are applied,stopping the truck in a uniform manner in an additional 3.6 s. How long is the truck in ...
*September 9, 2014 by Isaac*

**physics**

A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 11.0 m/s. Then the truck travels for 65.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.00 s. (a) How long is the ...
*September 29, 2014 by Anushya*

**physics**

a car starts from rest and accelerates at in a straight line at a constant rate of 4.5m/s/s. How far will the car travel in 35 seconds.
*November 22, 2011 by al*

**physics**

A stunt driver starting from rest needs to achieve a speed of 26.2 m/s. If her vehicle accelerates at 8.3 m/s/s, what distance (in m) must she travel to achieve the desired speed?
*October 4, 2012 by Victoria*

**Physics**

The first stage of a space vehicle consumed fuel and oxidizer at the rate of 1.60 multiplied by 104 kg/s, with an exhaust speed of 2.55 multiplied by 103 m/s. (a) Calculate the thrust produced by these engines. answer should be in N (b) Find the acceleration of the vehicle ...
*October 26, 2010 by Force and Velocity*

**physics**

A vehicle moves in a straight line with an acceleration of 5 km/h^2.By how much does the speed change each second?Answer in units of km/h
*September 3, 2012 by selena*

**Physics**

a vehicle weighs 120 kg wt brakes are applied so that the vehicle stops rolling and starts skidding find the force of friction if the coefficient of friction is 0.4
*January 30, 2011 by Shibasish*

**help**

B. A vehicle on a monorail has a speed S = 10 m/s and an acceleration S=4m/s2 relative to the ground reference XYZ when it reaches point A. Inside the vehicle, a 3 kg mass slides along a rod which at the time of interest is parallel to the X axis. This rod rotates about a ...
*April 18, 2012 by anirudh dhiman*

**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 vehicle is accelerating on a straight road. Its velocity at any instant is 30 km/hr, after 2 s, it is 33.6 km/hr and after further 2 s, it is 37.2 km/hr. Find the acceleration of vehicle in m/s^2
*June 10, 2014 by vicky*

**physics**

A vehicle expends an energy of 25000J while moving at a constant speed of 5 ms.what is the mass of vehicle?
*April 6, 2015 by nitya*

**physics**

A 1310-kg racecar is driving around a circular track of radius 153 m. In the instant shown in the figure, the vehicle has a forward speed of 31.7 m/s and is slowing at a rate of 5.35 m/s2. What is the magnitude of the net force acting on the vehicle at this time and the force...
*October 9, 2013 by kg90*

**engineering mechanics**

A vehicle on a monorail has a speed S = 10 m/s and an acceleration S=4m/s 2 relative to the ground reference XYZ when it reaches point A. Inside the vehicle, a 3 kg mass slides along a rod which at the time of interest is parallel to the X axis. This rod rotates about a ...
*March 17, 2013 by kuldeep*

**life skills **

It is important to make sure that any person selling you a car has? A. physical possession of the vehicle. B. informed the motor vehicles department of the intention to sell the vehicle. C. legal title to the vehicle. D. a good reputation for honesty.
*June 5, 2012 by yesenia*

**Math**

A vehicle covers 2,160 miles in 5.5 hours. What is the average speed of the vehicle to the nearest tenth. I got 55.5, but I don't think it is correct.
*June 25, 2013 by Matthew*

**physics**

the front wheels located far out in front of the racing vehicle help to keep the vehicle from nosing upward when it accelerates. what is its physics principle?
*December 3, 2013 by faidscs*

**Physics**

A spacecraft approaching the earth launches an exploration vehicle. After the launch, an observer on earth sees the spacecraft approaching at a speed of 0.74c and the exploration vehicle approaching at a speed of 0.98c. What is the speed of the exploration vehicle relative to ...
*July 20, 2012 by Beth*

**Classical Mechanics**

During a track event two runners, Mary, and Alice, round the last turn and head into the final stretch with Mary a distance d = 2.0 m in front of Alice. They are both running with the same speed of v0= 5.0 m/s. When the finish line is a distance L= 45.0 m away from Alice, ...
*September 15, 2013 by rya*

**physics**

The five engines of the first stage of a launch vehicle provide a total thrust of 31.5 x 106 newtons to the space vehicle (launch vehicle and spacecraft). Assuming the acceleration is uniform, calculate the acceleration of the 2.764 x 106 kg space vehicle after lift-off. The ...
*March 21, 2015 by baz*

**physics**

what is the average velocity of a vehicle that uniformly accelerates from rest to 38 fps?
*September 27, 2011 by lou*

**mitx 8.01x Classical Mechanics **

During a track event two runners, Mary, and Alice, round the last turn and head into the final stretch with Mary a distance d = 2.0 m in front of Alice. They are both running with the same speed of v0= 5.0 m/s. When the finish line is a distance L= 45.0 m away from Alice, ...
*September 10, 2013 by youlife*

**physics**

The drive propeller of a ship starts from rest and accelerates at 3.00 10-3 rad/s2 for 2.05 103 s. For the next 1.75 103 s the propeller rotates at a constant angular speed. Then it decelerates at 2.30 10-3 rad/s2 until it slows (without reversing direction) to an angular ...
*November 10, 2011 by Marco*

**physics**

The drive propeller of a ship starts from rest and accelerates at 2.90×10-3 rad/s2 for 2.10×103 s. For the next 1.40×103 s the propeller rotates at a constant angular speed. Then it decelerates at 2.30×10-3 rad/s2 until it slows (without reversing direction) to an angular ...
*March 9, 2015 by Jennifer*

**physics**

The drive propeller of a ship starts from rest and accelerates at 2.95 10-3 rad/s2 for 2.05 103 s. For the next 1.90 103 s the propeller rotates at a constant angular speed. Then it decelerates at 2.30 10-3 rad/s2 until it slows (without reversing direction) to an angular ...
*June 28, 2015 by Lola*

**chem**

A high-speed chase captured on a surveillance camera showed the suspect running a red light at an intersection. The suspect vehicle collided with a vehicle that had just turned into the path of his car. The tape shows that it took the car 0.546 s to cross the intersection, ...
*February 13, 2013 by tammy*

**Physics**

During a track event two runners, Mary, and Alice, round the last turn and head into the final stretch with Mary a distance d = 4.0 m in front of Alice. They are both running with the same speed of v0= 7.0 m/s. When the finish line is a distance L= 45.0 m away from Alice, ...
*September 12, 2013 by Urgent help*

**Math**

A vehicle starts w/ a full tank of gasoline and travels 150 miles. While refilling the tank, the driver notes that the vehicle used (1/4) tank of gasoline in traveling the 150 miles. Assuming the vehicle averages 25 miles per gallon, approximately how many gallons of gasoline ...
*April 21, 2009 by Helen*

**operating a car **

It is important to make sure that any person selling you a car has : A.physical possession of the vehicle. B.informed the motor vehicles department of the intention to sell the vehicle. C.legal title to the vehicle. D.a good reputation for honesty. i got C
*October 13, 2011 by Ciara*

**owning and operating a car**

It is important to make sure that any person selling you a car has? A. physical possession of the vehicle. B. informed the motor vehicles department of the intention to sell the vehicle. C. legal title to the vehicle. D. a good reputation for honesty.
*May 14, 2012 by Aisha*

**Physics**

A car, starting from rest, accelerates in the positive x direction. It has a mass of 1.10 x 103 kg and maintains an acceleration of 4.6 m/s^2 for 5 s. Assume that a single horizontal force accelerates the vehicle. Determine the power generated by this force.
*March 18, 2015 by Amiel*

**vehicle speed**

The radius of curvature of the path for a passenger car is 9.2m. The mass of the vehicle is 1,483kg. The coefficient of friction is 0.76 and the normal reactionary force for a tyre is 41kN. What is the maximum speed (in terms of km/h) of the car for cornering?
*March 19, 2012 by hing*

**physics, dynamics**

Car A starts from rest at t = 0 and travels along a straight road with a constant acceleration of 2 m/s2 until it reaches a speed of 27 m/s. Afterwards it maintains this speed. Also, when t = 0, car B located 2000 m down the road is traveling towards A at a constant speed of ...
*January 13, 2011 by siti*

**Physics**

A car accelerates uniformly in a straight line from rest at the rate of 2.7 m/s 2 . What is the speed of the car after it has traveled 58 m? Answer in m/s
*September 18, 2011 by Hayley*

**PHYSICS**

A train starts from rest and accelerates uniformly, until it has traveled 3 km and acquired a velocity of 20 m/s The train then moves at a constant velocity of 20 for 400 s. The train then slows down uniformly at 0.065 m/s2 until it is brought to a halt. Calculate the total ...
*May 25, 2010 by CHLOE*

**Math - Advanced Functions**

the function f(x)=-0.005x^2+0.8x+12 models the relationship between a certain vehicle's speed and a fuel economy, where f(x) is the fuel economy in kilometres per litre and x is the speed of the vehicle in kilometres per hour. Determine the rate of change in fuel economy for ...
*September 30, 2013 by Sydney*

**math(mechanics 1)**

a car traveling on a straight road accelerates uniformly at a meter per second square from its initial speed of 20 meter per second until it reaches a speed of 30 meter per second. the car travels at this speed for 600 meter and then decelerates uniformly at 0.5a meter per ...
*March 4, 2012 by maha*

**Drugs**

I asked a question earllier related to whether my idea of an inhalant was correct or not. Someone mentions something about vehicle. my question is: vehicle? Vehicle in this context means a way of getting something from one place to another. An inhalant is a means (vehicle) for...
*February 20, 2007 by Aalecia*

**physics**

if the greatest acceleration force which may be be applied to a vehicle is numerically equal to its weight, find a the least distance and b the least time, in which the vehicle travelling on a horizontal road can be brought to rest from an initial velocity of 25 m s-1
*January 17, 2011 by tennesha greene*

**Math grade 12 **

the function f(x)= -o.005t^2+0.8t+12 models the relationship between a certain vehicle’s speed and fuel economy, where is the fuel economy in kilometres per litre and x is the speed of the vehicle in kilometres per hour. Determine the rate of change in fuel economy for 10 km/h...
*July 22, 2011 by Anonymous*

**physics**

Car a starts from rest and speeds up with constant accelleration until it reaches its max speed. Car b starts from rest, at the moment car a is at max speed, and speeds up with constant acceleration. How much time elapses between when car b starts moving, and car b passes car ...
*September 28, 2014 by Jackk*

**Math**

Vehicle A averages 14 miles per gallon of gasoline, and Vehicle B averages 36 miles per gallon of gasoline. At these rates, how many more gallons of gasoline does Vehicle A need than Vehicle B to make a 1,008-mile trip?
*August 26, 2010 by Kelly*

**math **

vehicle a averges 14 miles per gallon of gasoline and vehicle b averges 36 miles per gallon of gasoline at these rates how many more gallons of gasoline does vehicle a need then vehicle b to make a 1008-mile trip
*September 26, 2010 by Anonymous*

**physics**

a 2400kg vehicle travelling north at 10.0m/s collides with a 500kg vehicle that is travelling east at 20.0m/s if the 2 vehicles lock together, what is their speed just after the collision
*May 22, 2013 by Anonymous*

**math **

A vehicle leaves a skid mark of 40 ft before stopping. What has the approximate speed of the vehicle before it stopped? (the formula is speed=.7 times length, then find the square root times 5.5) Is is 25-35 mph?
*October 26, 2010 by Summer*

**physics**

An object starts from rest and accelerates uniformly down an incline. If the object reaches a speed of 40 m/s in 5 seconds, what is its average speed?
*January 2, 2009 by Kevin*

**physics**

Each of the four wheels of the vehicle weighs 40 lb and is mounted on a 4in diameter journal. The total weight of the vehicle is 960 lb, including wheels, and is distributed equally on all four wheels. If a force P = 16 lb is required to keep the vehicle rolling at a constant ...
*September 13, 2009 by Jessi*