Friday

April 18, 2014

April 18, 2014

Number of results: 39,788

**Calc**

A car traveling at 43 ft/sec decelerates at a constant 5 feet per second squared. How many feet does the car travel before coming to a complete stop? i tried a few different equations, none of the worked. 43t - 5t^2 = 0 43 - 10t = 0 21.5t^2 - (5/3)t^3 = 0 maybe im not supposed...
*Thursday, November 23, 2006 at 10:15pm by Norris*

**Calculus**

A car traveling at 42 ft/sec decelerates at a constant 7 feet per second squared. How many feet does the car travel before coming to a complete stop?
*Thursday, April 26, 2012 at 6:53pm by Izzy*

**Calculus, AntiDerivatives**

I need help with this problem: A car traveling at 43 ft/sec decelerates at a constant 5 ft per second squared. How many feet does the car travel before coming to a complete stop? I'm not sure where to start, i know how to find antiDerivatives, but i dont even know the equation...
*Thursday, November 23, 2006 at 6:51pm by Mike*

**Calculus**

A car leaves an intersection traveling west. Its position 5 sec later is 22 ft from the intersection. At the same time, another car leaves the same intersection heading north so that its position 5 sec later is 27 ft from the intersection. If the speed of the cars at that ...
*Thursday, June 13, 2013 at 8:51pm by Mike*

**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 ...
*Wednesday, October 19, 2011 at 11:38pm by sal*

**Physics**

The instant a traffic light turns green a car that has been waiting at the light starts forward with a constant acceleration of 10 ft/s^2. At the same instant a truck traveling at a constant 30 ft/s overtakes and passes the car. 1. how far beyond the starting point will the ...
*Tuesday, October 9, 2007 at 5:49pm by Ashley*

**PHYSICS**

A car traveling at a constant velocity of 30.0 m/sec passes an intersection at time t=0. 45 seconds later a second car passes the same intersection and its traveling in the same direction at a constant velocity of 55 m/sec. when does the second car overtake the first car? how ...
*Sunday, October 16, 2011 at 7:53pm by Daniel*

**PHYSICS**

a car traveling at a constant velocity of 30 m/sec passes an intersection at time t=0 45 seconds later a second car passes the same intersection and its traveling in the same direction at a constant velocity of 55 m/sec. when does the second car overtake the first car? how far...
*Monday, October 17, 2011 at 9:37am by PHY*

**Word Problem, math.**

A police car traveling 100 ft/sec is chasing a car being driven erratically at 75 ft/sec. If the police car is 300 feet behind the other vehicle when the chase began, about how many seconds will it take to catch the erratic driver? I think I know how to solve this, but I want ...
*Sunday, September 5, 2010 at 3:57pm by Arie*

**calc**

a) A car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 40 ft/s^2. What is the distance covered before the car comes to a stop? b) A car braked with a constant deceleration of 40 ft/s^2 and produced skid marks measuring 160 feet...
*Sunday, November 22, 2009 at 3:49am by Jill*

**Calculus**

A car traveling at 72 mph starts braking and decelerates at a constant rate. the car takes 1/9 of a mile to stop. Find, to the nearest half-second, how long it took the car to cover the 1/9 of a mile. I don't need the whole thing done. Just don't know how to start!
*Sunday, February 16, 2014 at 11:37am by Anonomous*

**physics**

which of the following is there no net work? A car accelerates down a hill. A car travels at constant speed on a flat road. A car decelerates on a flat road. A car decelerates as it travels up a hill. I say its the first one
*Saturday, August 6, 2011 at 7:31pm by Kate*

**physics**

a car traveling at 43m/s decelerates at a rate of 7.1 m/s squared. how long did it take the car to stop? what distance did the car travel while stopping?
*Thursday, March 27, 2014 at 2:29am by ben*

**calculus**

A car is travelling at 90mph when its brakes are fully applied, producing a constant deceleration of 22 ft/sec2. Find the distance covered by the car before it comes to a stop. (Remember: 60 mph equals 88 ft/sec.)
*Sunday, April 11, 2010 at 3:53pm by Garrett*

**physics**

a) calculate the acceleration of a 0.55-m-diameter car tire while the car is traveling at a constant speed of 25m/sec. b) compare this with acceleration experienced by a jet car tire of diameter 1.0m when setting a land speed record of 310m/sec
*Monday, September 26, 2011 at 5:29pm by lucy *

**physics**

if a car goes from 10 m/s to a full stop,then its change in velocity is 10m/s.if it decelerates at a rate of 2.5 m/sec square,it will take 4 sec to stop.how far this car will travel when braking to a stop?
*Tuesday, January 24, 2012 at 3:14pm by farhan*

**physics**

if a car goes from 10 m/s to a full stop,then its change in velocity is 10m/s.if it decelerates at a rate of 2.5 m/sec square,it will take 4 sec to stop.how far this car will travel when braking to a stop?
*Tuesday, January 24, 2012 at 3:22pm by farhan*

**Physics.**

An unmarked police car traveling a constant 95 km/h is passed by a speeder traveling 120 km/h. Precisely 1.00 sec. after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 1.90 m/s^2 , how much time passes before the police car...
*Thursday, October 7, 2010 at 12:25am by Michael*

**physics**

A car is traveling at v = 16m/s . The driver applies the brakes and the car decelerates at a= -4.0 m/s^2 . What is the stopping distance?
*Friday, February 4, 2011 at 3:27pm by Anonymous*

**inter Alegbra**

Pick a car and find its top speed. Assuming that your chosen car reaches its top speed at the top of a ramp, leaving the ramp vertically 20 feet about the ground: 1.) When will the car land back on the ground? 2.) When would the car be traveling the fastest? 3.) When would the...
*Sunday, November 14, 2010 at 12:19pm by linda*

**Science**

A car is traveling at 15 m/sec. Ten minutes later it is traveling at 70 m/sec. What is the acceleration?
*Sunday, May 2, 2010 at 7:34pm by Jordan*

**Calc**

A car is moving at 40 mi/h along a straight line when the driver sees a light turn red. She hits the brakes when she is 100 ft from the light and decelerates at the rate of 16 ft per second squared. How far does she travel before stopping? Choose the whole number that is ...
*Sunday, January 20, 2013 at 8:42pm by Sean*

**science**

A race car travels northward on a straight, level track at a constant speed, traveling 0.777 km in 16.6 sec. The return trip over the same track is made in 21.7 sec. What is the average velocity of the car for the FIRST leg of the trip? What is the average velocity of the car ...
*Sunday, February 5, 2012 at 12:06am by Anonymous*

**college physics**

A(n) 13,300 lb railroad car traveling at 7.4 ft/s couples with a stationary car of 6790 lb. The acceleration of gravity is 32 ft/s^2. What is their velocity after the collision (ft/s)? And what impulse did the first car receive? Answer in units of lbs. Any help would be ...
*Tuesday, March 23, 2010 at 12:33am by eric*

**Calculus help!**

“(1) A toy truck travels at a rate of 0.5t ft/sec after t seconds of travel (so after 6 seconds the truck is traveling 3 ft/sec). “ why is it going suddenly slower, you said it was going at .5 ft/sec.
*Monday, January 21, 2008 at 2:35pm by Reiny*

**math**

The stopping distance D of a car after the brakes have been applied varies directly as the square of the speed s. A certain car traveling at 70 mi/h can stop in 343 ft. What is the maximum speed it can be traveling if it needs to stop in 160 ft?
*Tuesday, February 26, 2013 at 10:30pm by El*

**Pre-Calculus**

The stopping distance D of a car after the brakes have been applied varies directly as the square of the speed s. A certain car traveling at 70 mi/h can stop in 343 ft. What is the maximum speed it can be traveling if it needs to stop in 160 ft?
*Tuesday, February 26, 2013 at 10:30pm by Michelle*

**physical science**

If a car goes along a straight road heading east and speeds up from 45 ft/sec to 60. ft/sec in 5 sec, calculate the acceleration. = 3-3 ft/sec 2 NESn/aW Note: If the speed were given in miles per hour, and the time were given in minutes, you could change the minutes to a ...
*Monday, June 27, 2011 at 6:55am by pat*

**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.
*Friday, June 1, 2012 at 12:02pm by ll*

**Physics**

At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 2.85m/s^2. At the same instant a truck, traveling with a constant speed of 19.0m/s, overtakes and passes the car. A) How far beyond its ...
*Saturday, July 9, 2011 at 6:10am by Arthur*

**Word Problem, math.**

the stopping distance d of a car after the brakes are applied varies directly as the square of the speed r. If a car traveling 40 mph can stop in 90 ft, how many feet will it take the same car to stop when it is traveling 30mph?V
*Sunday, September 5, 2010 at 3:57pm by cec*

** math**

a car is traveling at a speed of 30.0m/s encounters an emergency and comes to complete stop how much time will it take for the car to stop if it decelerates -4.o m/s^2
*Wednesday, October 9, 2013 at 3:55pm by Anonymous*

**Physics 30**

a 2000kg car traveling east at 24m/sec enters an icy (frictionless) intersection and collides with a 3600kg truck traveling south at 10 m/sec. If they become coupled together in the collision, what is their velocity immediately after impact?
*Tuesday, May 1, 2012 at 11:32pm by Don*

**calculus**

A car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 26 ft/s2. What is the distance covered before the car comes to a stop? (Round your answer to one decimal place.)
*Friday, January 11, 2013 at 8:09pm by bobo*

**mathematics**

A car braked with a constant deceleration of 45ft/s^2 producing skid marks measuring 55 ft before coming to a stop. How fast was the car traveling when the brakes were first applied? Please round the answer to the nearest hundredth. Vo= ft/s Vintial^2 - Vfinal^2= -2*...
*Saturday, April 14, 2007 at 11:14am by Julia*

**Physics**

A car traveling 56 km/h is 21.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.17 s later. a)What was the car's constant deceleration before impact? b)How fast was the car traveling at impact?
*Wednesday, September 2, 2009 at 11:44pm by Nick*

**physics**

By using static friction coefficient Uk, we assume that the car does NOT go into a skid. The maximum static friction amount is applied to the tires even though they are still turning. That force decelerates the car over a distance X friction work = Uk*M g X = (1/2) M V^2 X = V...
*Sunday, November 9, 2008 at 1:44am by drwls*

**physics**

The last car unfastens from a moving train. The train continues to move at the same constant speed. What is the ratio of the paths covered by the train and car up to the moment of the car’s stop? Assume that the car decelerates uniformly. Solve this problem graphically.
*Wednesday, August 17, 2011 at 10:20pm by Anonymous*

**physics**

A car is traveling at a constant initial velocity of 100km/h on a level portion of road. It encounters a 6 percent incline (tan(theta)= 6/100) at point A and the car decelerates at a constant rate of gsin(theta). Find the speed of the car (a) 10 seconds after passing point A ...
*Sunday, October 4, 2009 at 12:01am by Jessi*

**Algebra 2 **

Story problems are my favorite. However, I can not figure this one out. THe stopping distance d of a car after the breaks are applied varies directly as the square of the speed r. If a car traveling at 70mph can stop in 270 ft. How many feet will it take the same car to stop ...
*Tuesday, August 3, 2010 at 2:50pm by Christy*

**physics**

car accelerates from 0 to 60 mi/hr in a time of 5.8 secs. a. What is the acceleration of car in m/s squared? need help setting up the problem, thanks acceleration = (speed change)/(time interval) To get the answer in m/s^2, the speed change of 60 mi/hr must first be converted ...
*Monday, September 4, 2006 at 11:55pm by mitch*

**Math**

I think this problem has a figure given, but it can't be shown. Well I think it's ok. Acceleration is equal to change in velocity over time. Note that is a vector quantity, so it is represented by magnitude and direction. In the problem, since it slows down, it is termed as ...
*Wednesday, March 6, 2013 at 2:07am by Jai*

**physics**

A car starts from rest and moves along x-axis with constant acceleration (5m/secondsquare) fr 8 sec. If it then countinues with constant velocity. What distance will the car cover in 12 sec since it started frm rest. plz anybody explain me
*Thursday, July 5, 2012 at 1:41pm by Maihul*

**science/math**

A car traveling at the speed of 30.0 m/sec encounters an emergency and comes to a complete stop. how much time will it take for the car to stop if its rate of deceleration is -4.0 m/sec
*Thursday, January 16, 2014 at 9:17pm by christina*

**physics**

Is homeplate 43 feet wide? I wonder if you meant how long does it take for the ball to reach homeplate? I memorized long ago 60mph is the same as 88 feet/sec velocity=65*88/60 ft/sec time=distance/velocity=43/(velocityinFt/sec)
*Sunday, September 12, 2010 at 11:05am by bobpursley*

**calculus**

Q#1: From a point of O, two cars leave at the same time. One car travels west and after ‘t’ sec, its position is x=t2+t ft. the other car travels north and it covers y= t2+3t ft in ‘t’ sec. At what rate is the distance between the two cars changing after 5 sec? Question#2: ...
*Tuesday, October 19, 2010 at 11:34am by awesome*

**Differential Equations**

A car is traveling at 70 mph skids 240 ft after it's breaks are suddenly applied. Assuming that the cars breaking system provides a constant deceleration, find that deceleration. How long did it take the car to stop?
*Sunday, June 19, 2011 at 5:47pm by Jenna*

**Calculus**

I do not agree with bobpursley's solution let the distance of the woman from the streetlight be x ft let the length of her shadow be y ft by ratios ... 5/y = 16/(x+y) 16y = 5x + 5y 11y = 5x 11 dy/dt = 5 dx/dt but dx/dt = 5.5 dy/dt = (5/11)(5.5) = 2.5 So her shadow is ...
*Tuesday, October 23, 2012 at 4:47pm by Reiny*

**Engineering**

i did A=pi(1/48)^2=.0014 2.5 ft/sec * .0014ft .0035 ft^3 450 galmin/1 ft^3/sec * .0035 ft^3/sec*15 min = 23.625 gpm
*Monday, September 25, 2006 at 6:31pm by Matt to drwls*

**maths**

the equation for the motion of an object with constant acceleration is d=vt+0.5at^2where d is the distance travelled in ft, v is the starting velocity in ft/s a is the acceleration in ft/s^2 and t is time in seconds a race car begins with a velocity of 200ft/s and accelerates ...
*Friday, August 16, 2013 at 9:36am by ellie*

**Physics**

An automobile is traveling 65mph. its brakes decelerates at 6.0mps. how long will it take to stop the car?
*Thursday, December 14, 2006 at 12:08am by Anonymous*

**Physics**

An automobile is traveling 65mph. Its brakes decelerates at 6.0mps. How long will it takes to stop the car?
*Tuesday, October 22, 2013 at 9:54am by Amos*

**Physics**

A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.15 s later. (a) Assuming constant acceleration, what was the magnitude of the car's acceleration before impact? _______ m/s2 (b) How fast was the car traveling at ...
*Wednesday, September 19, 2012 at 2:43pm by arcos15*

**Physics**

A car traveling 56 km/h is 22.0 m from a barrier when the driver slams on the brakes. The car hits the barrier 2.15 s later. (a) Assuming constant acceleration, what was the magnitude of the car's acceleration before impact? _______ m/s2 (b) How fast was the car traveling at ...
*Wednesday, September 19, 2012 at 10:08pm by arcos15*

**physics **

A truck is pulling a car. FT is the magnitude of the force that the truck exerts on the car FC is the magnitude of the force that the car exerts on the truck Consider the following scenarios independently. 1)The truck is driving with a constant velocity, but as it turns out, ...
*Thursday, February 13, 2014 at 8:45pm by Jane*

**physics**

an automobile moving at a constant velocity of 50 ft/sec passes a gasoline station. 3 sec later, another automobile leaves the gasoline station and accelerates at the constant rate of 6.5 ft/sec2. how soon will the second automobile overtake the first?
*Sunday, November 14, 2010 at 1:43am by che_scarlet*

**Physics**

A car traveling at 20 m/s accelerates at 7 m/s2 for 3 sec. How fast is it now traveling? Please help!
*Tuesday, January 15, 2013 at 11:17pm by Jamie*

**Calculus Antiderivative Problem**

A car traveling at 46 mph decelerates at 21 feet per second per second. a). How long does it take for the car to come to a complete stop? b). What distance is required to bring the car to a complete stop? An
*Friday, November 8, 2013 at 7:28pm by Claire*

**VARIATION- ALGEBRA 2**

The length of skid marks a car makes when braking varies directly with the square of the speed of the car. If a car traveling 25 mph leaves skid marks 30 ft long, how long would the skid marks be if the car is traveling 40 mph??
*Wednesday, March 5, 2014 at 8:25pm by Amy*

**physics, dynamics**

Two cars are traveling along a straight road. Car a maintains a constant speed of 89 km/hr and car b maintains a constant speed of 119 km/hr. at t=0 car b is behind 38km from car a. How far will car a travel from t =0 before it is overtaken by car b. how long from t=0 will it ...
*Thursday, January 13, 2011 at 10:39pm by Anonymous*

**Math**

I assume you made a diagram showing the highway and the road at 90° and the cop at 225 ft from the highway. let the moving car's position be x ft from the intersection, and Ø be the angle. then x/225 = tanØ x = 225tanØ 1 = 225 sec^2Ø dØ/dx dØ/dx = 1/sec^2 Ø dx/dt = 225sec^2 Ø ...
*Sunday, November 17, 2013 at 8:08pm by Reiny*

**physical science**

A car traveling at 30 mph can stop in about 100 ft. How far does it take for the same car to stop if it is traveling at 60 mph?
*Thursday, December 15, 2011 at 8:49pm by Fonda*

**physic**

You are traveling at a constant speed υM, and there is a car in front of you traveling with a speed υA You notice that υM>υA, so you start slowing down with a constant acceleration a when the distance between you and the other car is x. What relationship...
*Sunday, September 29, 2013 at 3:58pm by kolam*

**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...
*Tuesday, September 11, 2007 at 3:25pm by Tammy*

**Physics**

Your velocity would not remain constant. Your velocity would increase by 32.2 ft./sec./sec. = 32.2 ft./sec/^2 The time to reach the ground (ignoring the earth;s curvature) derives from h = Vot + gt^2 where Vo = the initial vertical velocity = 0, g = the acceleration due to ...
*Friday, February 8, 2008 at 5:49pm by tchrwill*

**physics**

Suppose a car is traveling at 17.0 m/s, and the driver sees a traffic light turn red. After 0.570 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 9.00 m/s2. What is the stopping distance of the car, as measured from the point where ...
*Thursday, January 26, 2012 at 4:39pm by Mi26*

**Physics**

Suppose a car is traveling at 14.0 m/s, and the driver sees a traffic light turn red. After 0.500 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 5.00 m/s2. What is the stopping distance of the car, as measured from the point where ...
*Tuesday, January 31, 2012 at 11:16pm by Anonymous*

**physics **

Suppose a car is traveling at +23.8 m/s, and the driver sees a traffic light turn red. After 0.351 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 7.00 m/s2. What is the stopping distance of the car, as measured from the point where...
*Thursday, September 6, 2012 at 9:19pm by gabe*

**Physics**

Suppose a car is traveling at +24.8 m/s, and the driver sees a traffic light turn red. After 0.372 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 6.00 m/s2. What is the stopping distance of the car, as measured from the point where...
*Tuesday, September 11, 2012 at 7:09pm by StressedStudent*

**physics**

Suppose a car is traveling at +20.7 m/s, and the driver sees a traffic light turn red. After 0.314 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 5.00 m/s2. What is the stopping distance of the car, as measured from the point where...
*Tuesday, June 18, 2013 at 9:14pm by dre*

**Physics**

Suppose a car is traveling at +22.0 m/s, and the driver sees a traffic light turn red. After 0.560 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 4.00 m/s2. What is the stopping distance of the car, as measured from the point where...
*Saturday, August 31, 2013 at 10:42pm by WR*

**physics**

Suppose a car is traveling at +22.3 m/s, and the driver sees a traffic light turn red. After 0.351 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 8.00 m/s2. What is the stopping distance of the car, as measured from the point where...
*Wednesday, September 11, 2013 at 3:15pm by Julie*

**physics**

Suppose a car is traveling at +22.3 m/s, and the driver sees a traffic light turn red. After 0.351 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 8.00 m/s2. What is the stopping distance of the car, as measured from the point where...
*Wednesday, September 11, 2013 at 4:16pm by Julie*

**physics**

Suppose a car is traveling at +22.3 m/s, and the driver sees a traffic light turn red. After 0.351 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 8.00 m/s2. What is the stopping distance of the car, as measured from the point where...
*Wednesday, September 11, 2013 at 4:16pm by Julie*

**Precalculus**

Anthony is trying to cross the Mississippi river in a kayak. He is traveling due east at 6 ft/second. However there is a current that is traveling due north at 4 ft/sec. find the new speed and direction of Anthony and his kayak. If the distance across the Mississippi is 120 ft...
*Tuesday, February 5, 2013 at 2:32am by Susan*

**Physics**

The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. 3.) B and C - The car is decelerating ...
*Tuesday, February 5, 2013 at 7:45am by RR*

**Physics**

The speed time graph shows the motion of a car over a period of 40 seconds. a. describe the motion of the car between: 1.) O and A - The car is traveling at constant speed from 0 to 20 m/s. 2.) A and B - The car is at rest for 20 seconds. 3.) B and C - The car is decelerating ...
*Tuesday, February 5, 2013 at 8:21am by RR*

**Physics**

The speed limit in a school zone is 40 km/h. A driver traveling at this speed sees a child run into the road 23 m ahead of hs car. He applies the brakes, and the car decelerates at a uniform rate of 8.0m/s^2. if the driver's reaction time is .25s, will the car stop before ...
*Thursday, September 3, 2009 at 9:50pm by Anonymous*

**Physics**

A car traveling at 50 km/h hits a bridge abutment. A passenger in the car moves forward a distance of 74 cm (with respect to the road) while being brought to rest by an inflated air bag. What magnitude of force (assumed constant) acts on the passenger's upper torso, which has ...
*Sunday, December 12, 2010 at 2:34pm by Oriana*

**Physics**

A car traveling at 58 km/h hits a bridge abutment. A passenger in the car moves forward a distance of 63 cm (with respect to the road) while being brought to rest by an inflated air bag. What magnitude of force (assumed constant) acts on the passenger's upper torso, which has ...
*Tuesday, March 6, 2012 at 11:10pm by Leo*

**physics**

Suppose a car is traveling at +24.1 m/s, and the driver sees a traffic light turn red. After 0.366 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 8.00 m/s2. What is the stopping distance of the car, as measured from the point where...
*Sunday, June 16, 2013 at 11:00pm by louis aaaaa*

**physic**

A car traveling at 80km/hr decelerates at 1.5m/s^2. Calculate a) the time it takes to stop. b) The distance travelled in the 3rd second.
*Thursday, May 16, 2013 at 8:13pm by Anonymous*

**math**

The stopping distance d of a car after tehe brakes are applied varies directly as the square of the speed r. If a car traveling 50 mph can stop in 140 ft. How many feet will it take the same car to stop when it is traveling 70 mph? I did everything and I got 6860/25, how do I ...
*Friday, July 3, 2009 at 9:57pm by Kay*

**Physics**

Car A is traveling at 84 km/h while Car B is traveling at 58 km/h. What is the relative velocity of Car A to Car B if they both are traveling in the same direction? What is the relative velocity of Car A to Car B if they are headed towards each other?
*Saturday, August 25, 2007 at 7:03pm by Jayd*

**Physics**

Car A is traveling at 84 km/h while Car B is traveling at 58 km/h. What is the relative velocity of Car A to Car B if they both are traveling in the same direction? What is the relative velocity of Car A to Car B if they are headed towards each other?
*Sunday, August 26, 2007 at 11:23am by Jayd*

**Physics**

A car is traveling at 16.0 m/s, and the driver sees a traffic light turn red. After 0.500 s (the reaction time), the driver applies the brakes, and the car decelerates at 8.00 m/s2. What is the stopping distance of the car, as measured from the point where the driver first ...
*Friday, January 24, 2014 at 6:46pm by Jon*

**physics**

A car is traveling at 25m/s when an accident occurs. The car decelerates 300m/s^2 but the passenger does not slow down because he is not wearing a seatbelt. a) Supposing the distance between the passenger and the dashboard is initially 0.50m, what will be the speed of the car ...
*Sunday, February 10, 2013 at 11:58pm by rob*

**honors physics**

A car is traveling on an interstate highway: a) Can the car have a negative velocity and a positive acceleration at the same time? Explain. b) Can the car's velocity change signs while it is traveling with constant acceleration? Explain.
*Monday, September 10, 2012 at 7:51pm by sarah*

**physics**

An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 14km/h .Precisely 2.50s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30m/s^2 , how much time passes before the police car ...
*Sunday, April 15, 2012 at 11:39pm by kelly*

**Physics **

An unmarked police car traveling a constant 80km/h is passed by a speeder traveling 135km/h. Precisely 3.00s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 1.50m/s^2 , how much time passes before the police car ...
*Sunday, October 6, 2013 at 12:11am by Matthew*

**physical science**

If a car goes along a straight road heading east and speeds up from 45 ft/sec to 60. ft/sec in 5 sec, calculate the acceleration. = Note: If the speed were given in miles per hour, and the time were given in minutes, you could change the minutes to a fraction of an hour and do...
*Monday, June 27, 2011 at 6:56am by pat*

**Physics**

1.5 revolutions. If it starts at 3 rev/sec and ends at 0 rev/sec and decelerates uniformly, then the avg is 1.5 rev/sec. It spent 1 second, so 1.5 rev/sec * 1 sec = 1.5 rev
*Monday, October 4, 2010 at 5:29pm by Mak*

**physics - college **

An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 14km/h .Precisely 2.50s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30m/s^2 , how much time passes before the police car ...
*Sunday, April 15, 2012 at 5:32pm by bill *

**physics - college **

An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 14km/h .Precisely 2.50s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30m/s^2 , how much time passes before the police car ...
*Sunday, April 15, 2012 at 5:50pm by bill *

**Algebra 2**

If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=-16t^2+vt+s(where h and s are in ft, t is in seconds and v is in ft/sec) A package is thrown downward with an initial velocity of -...
*Sunday, April 29, 2012 at 1:07am by Kelsey*

**college physics 44**

An unmarked police car traveling a constant 95km/h is passed by a speeder traveling 14km/h .Precisely 2.50s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.30m/s^2 , how much time passes before the police car ...
*Sunday, April 15, 2012 at 4:38pm by ally*

**physics**

A car decelerates at a constant rate from 98.5 km/h to 67.9 km/h over a distance of 0.651 km. How many seconds is the car decelerating?
*Thursday, October 4, 2012 at 9:02pm by Victoria*

**physical science**

A rock tied to a string is swung around in a circle at a constant speed of 25 ft/sec. The length of the string is 1.765 ft. Calculate the acceleration. = _____ . 354.1 ft/sec2 350 ft/sec2 14.16 ft/sec2 14 ft/sec2
*Monday, June 27, 2011 at 6:59am by pat*

**physics**

How long does it take to fall 17.2 inches. (I assume you are working with an ancient text that uses feet and inches so in your world g = 32 ft/s^2) 17.2 inches /12 in/ft = 1.43 ft d = 1.43 = (1/2) g t^2 1.43 = 16 t^2 t = .299 seconds to fall So horizontal speed u took us 1.61 ...
*Saturday, November 17, 2012 at 8:53pm by Damon*

**physics**

How long does it take to fall 17.2 inches. (I assume you are working with an ancient text that uses feet and inches so in your world g = 32 ft/s^2) 17.2 inches /12 in/ft = 1.43 ft d = 1.43 = (1/2) g t^2 1.43 = 16 t^2 t = .299 seconds to fall So horizontal speed u took us 1.61 ...
*Saturday, November 17, 2012 at 8:53pm by Damon*

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