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April 20, 2014

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

Number of results: 20,112

physics
2 identical cars capable of accelerating at 3.00m/s^2 are racing on a straight track with running starts. car A has an initial speed of 2.50m/s and car B has an initial speed of 5.00m/s. what is the seperation of the 2 cars after 10seconds? which car is moving faster after ...
Monday, September 20, 2010 at 11:13am by Anonymous

Engineering Physics
A car and a train move together along straight, parallel paths with the same constant cruising speed v(initial). At t=0 the car driver notices a red light ahead and slows down with constant acceleration -a(initial). Just as the car comes to a full stop, the light immediately ...
Wednesday, September 16, 2009 at 11:36am by Andrew Rozmarynowycz

physics
36 km/h = 36000m/3600 s = 10 m/s Car's initial momentum = 10^3*10 = 10^4 kg*m/s Divide that by the stopping time (5 s) to get the average force, in newtons. The "work done by the car" is the initial kinetic energy of the car, (1/2)MVo^2 = 5*10^4 J, but it is mostly converted ...
Monday, December 31, 2012 at 6:34am by drwls

physAH!
A car that is initially at rest moves along a circular path with a constant tangential acceleration component of 2.07 m/s2. The circular path has a radius of 42.4 m. The initial position of the car is at the far west location on the circle and the initial velocity is to the ...
Monday, February 20, 2012 at 3:53pm by opp

physics
A 1000 kg car in neutral gear slow from 15 m/s to a stop in 5.0 s due to the force of friction. A. What was the acceleration of the car. B. What was the carís initial momentum? C. What was its final momentum? D. What was the change in momentum of the car? E. What was the ...
Sunday, October 23, 2011 at 11:59pm by Anonymous

physics
A car moving with an initial speed v collides with a second stationary car that is 50.7 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 33.2 percent of the original speed. Calculate the final speed of the second ...
Wednesday, March 26, 2014 at 7:48pm by Erin

physics
A car moving with an initial speed v collides with a second stationary car that is 46.0 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 37.7 percent of the original speed. Calculate the final speed of the second...
Monday, March 24, 2014 at 9:45am by Sami

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

DYNAMICS
A car has an initial speed of 25m/s and a constant deceleration of 3m/s^2. Determine thewvelocity of the car when t=4s. What is the displacement of the car during the 4-s time interval? How much time is needed to stop the car?
Sunday, February 17, 2013 at 8:18pm by HELP

10 grade
A 80 slug car runs into a wall while moving at 10ft/s. If the car bounces off the wall with the same speed it struck it with as a result of having been in contact with the wall for .8 second, then find... a)... The initial momentum of the car b)... The final momentum of the ...
Thursday, February 10, 2011 at 12:44am by sravya

Physics
A car is moving in the +x direction with the following position equation of motion: x = 5.41(m/s)t - 2.7(m/s^2)t^2. (a) What is the initial velocity of the car? 5.41 m/s (b) What is the acceleration of the car? -5.4 m/s^2 (c) At what time does the car come to rest? __________ ...
Friday, September 21, 2012 at 1:35am by arcos15

PHYSICS
A car is moving in the +x direction with the following position equation of motion: x = 5.41(m/s)t - 2.7(m/s^2)t^2. (a) What is the initial velocity of the car? 5.41 m/s (b) What is the acceleration of the car? -5.4 m/s^2 (c) At what time does the car come to rest? __________ ...
Friday, September 21, 2012 at 1:35am by arcos15

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

physics
A car has an initial speed of 23.0 ms-1. In addition, there is also wind blowing in direction similar to the car with a force of 30 N. If the brakes are applied and the car skidded for 10 meters before coming to a halt, determine the kinetic friction of one of the carís tyre ...
Sunday, May 15, 2011 at 5:32am by aaron

physics
A car has an initial speed of 23.0 ms-1. In addition, there is also wind blowing in direction similar to the car with a force of 30 N. If the brakes are applied and the car skidded for 10 meters before coming to a halt, determine the kinetic friction of one of the carís tyre ...
Sunday, May 15, 2011 at 5:34am by aaron

Physics
To stop a car, first you require a certain reaction time to begin braking. Then the car slows down at a constant rate. Suppose that the total distance moved by your car during these two phases is 56.7 m when its initial speed is 85.0 km/h, and 24.4 m when the initial speed is ...
Wednesday, March 5, 2008 at 7:12pm by Lance

DYNAMICS
A car has an initial speed of 25m/s and a constant deceleration of 3m/s^2. Determine thewvelocity of the car when t=4s. What is the displacement of the car during the 4-s time interval? How much time is needed to stop the car? How do i get the displacement?
Sunday, February 17, 2013 at 10:33pm by HELP

Physics
Car A and B are passing each other in different lanes. Car A has an initial speed of 15m/s and is gaining speed at 1.5m/s^2. Car B has an initial speed of 20m/s and is gaining speed at 2.0m/s^2. Find when and where the cars will pass one another and their speeds as they are ...
Wednesday, February 20, 2008 at 8:02am by Anonymous

Math
A car is projected directly up an incline and its location from its start point is given by the formula s = 9t - 5t2. Determine its initial velocity and initial acceleration. initial velocity in m/s = initial acceleration in m/s2 = My Answer s'=9-10t initial velocity in m/s = ...
Tuesday, January 29, 2013 at 6:38pm by Brownie

Physics
An open railroad car of mass 2445 kg is coasting with an initial speed of 22 m/s on a frictionless, horizontal track. It is raining, and water begins to accumulate in the car. After some time, it is found that the speed of the car is only 5 m/s. How much water (in kilograms) ...
Wednesday, May 30, 2012 at 10:12pm by Alex

AP Physics
To stop a car, you require first a certain reaction time to begin braking. Then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 56.7 m when its initial speed is 82.5 km/h, and 24.4 when the ...
Sunday, September 9, 2007 at 2:40pm by Kristen

physics
An open railroad car of mass 2449 kg is coasting with an initial speed of 17 m/s on a frictionless, horizontal track. It is raining, and water begins to accumulate in the car. After some time, it is found that the speed of the car is only 10 m/s. How much water (in kilograms) ...
Sunday, December 4, 2011 at 7:16pm by glenmore

Physics
The braking distance of a car is 29m. If the speed of the car is increased by 45%, what is the car's new braking distance? Assume the acceleration of the car is constant and independent of its initial speed
Thursday, October 13, 2011 at 9:27pm by Jake

Physics
Car A is traveling at 18 m/s and car B at 25 m/s. Car A is 300m behind car B when the driver of Car A accelerates his car with an acceleration of 1.80m/s^2. How long does it take car A to overtake car B?
Tuesday, January 8, 2013 at 9:25pm by B

Physics
A car is coasting to a stop. The total drag (frictional Forces) on the 200kg car equal 2000N. Initial velocity is 25 m/s 1. What is the acceleration of the car? 2. How far does it travel before comming to a stop?
Saturday, May 26, 2012 at 10:03pm by Khloe B

physics
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?
Friday, October 8, 2010 at 12:07am by Jordan

physics
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.6 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times
Wednesday, March 9, 2011 at 7:27pm by Amanda

Uni Physics
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of v = 4.7 m s-1, what is the largest value that the radius r can have if the car is to remain in contact with the track at all times?
Tuesday, October 2, 2012 at 12:01am by David Gia

algebra
kathy plans to purchase a car that depreciates (loses value)at a rate of 14%per year initial cost of the car ia $21,000.which equation represents the value,v,of the car after 3 years?
Thursday, May 23, 2013 at 5:47pm by harpreet

College Physics
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?
Wednesday, October 6, 2010 at 10:02pm by Dawn

MATH
a rule of thumb used by car dealers is that the trade in value of a car decreases by 20% of its value each year. suppose the initial value of your car is $23,500. write an equation expressing the trade in value of your car as a function of the number of years from now. if your...
Tuesday, February 26, 2013 at 10:11pm by Anonymous

Physics
A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 220 m. If the red car has a constant velocity of +20 km/h, the cars pass each ...
Thursday, September 3, 2009 at 9:44pm by Henry

Algebra 2..
a rule of thumb used by car dealers is that the trade in value of a car decreases by 20% of its value each year. suppose the initial value of your car is $23,500. write an equation expressing the trade in value of your car as a function of the number of years from now. if your...
Tuesday, February 26, 2013 at 8:36pm by Anonymous

physics
To call the algebra on this question convuluted is a profound understatement. Nevertheless, I have solved it. The range equals 20 meters and the initial velocity of the car along the x-axis is 0.98Vi (or the Vicos10). Since the combined time the car travels up and down on the ...
Monday, September 14, 2009 at 3:11am by M

MATH
NEED EXTREME HELP!@#$%^a rule of thumb used by car dealers is that the trade in value of a car decreases by 20% of its value each year. suppose the initial value of your car is $23,500. write an equation expressing the trade in value of your car as a function of the number of...
Wednesday, February 27, 2013 at 12:28am by Anonymous

Physics
A car travels 12 km West, 18 km South. What is the total car displacement? The car takes 10 minutes to travel from each initial position to final position. What is the average speed and velocity?
Wednesday, June 20, 2012 at 4:31am by Helpme

Physics
A car's initial velocity of 13.5 m/s accelerates at a rate of 1.9 m/s^2 for 6.2 s. Then, it accelerates at a rate of -1.2 m/s^2 until it stops. 1) What is the car's maximum speed? 2) What is the total time from the start of the first acceleration until the car is stopped? 3) ...
Wednesday, February 1, 2012 at 10:50am by Erica

physics
An experimental flywheel, used to store energy and replace an automobile engine, is a solid disk of mass 202.0 kg and radius 0.35 m. (a) What is its rotational inertia? (b) When driving at 22.4 m/s (50 mph), the fully energized flywheel is rotating at an angular speed of 3160 ...
Thursday, March 22, 2012 at 3:26pm by opp

Physics
A car is travelling with a 5m/s in 25 minutes at a distance of 30cm calculate initial velocity and declaration of the car.
Monday, November 29, 2010 at 5:11am by Abdullah

Physics
A car is travelling with a 5m/s in 25 minutes at a distance of 30cm calculate initial velocity and declaration of the car.
Monday, November 29, 2010 at 5:11am by Abdullah

Physics
How large an average force is required to stop a 1400-kg car in 5.0 s if the carís initial speed is 25 m/s?
Wednesday, March 12, 2014 at 12:13pm by Bola

Circular motion
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 5.0 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?
Monday, October 10, 2011 at 8:26pm by Acceleration

math
The value of a new car decreases exponentially.Suppose your mother buys a new car for 22,000. The value of the car decreases by 20% each year. a.what is the initial price of the car. The decay factor. b. write an equation to model the value of the cars years after she buys it...
Sunday, October 14, 2012 at 7:07pm by john

physical
When they start to move,car A exerts a force of 600N on its end of the towrope.The frictional force on car B when it accelerates,is 300N And its masses is 1200kg(a)calculate car bs initial acceleration(b)after a while the cars move at a constant velocity and car A exerts a ...
Wednesday, March 7, 2012 at 1:45pm by Anonymous

physics
A car having an initial speed of 16 m/s is uniformly brought to rest in 4.0 s. How far does the car travel during this 4.0 s interval?
Thursday, October 20, 2011 at 8:00pm by john

Mechanics - physics
A car of mass 400kg moving initial at 36km/h increases to 120km/h in 6sec, what is the force acting on the car?
Friday, January 4, 2013 at 7:25pm by Precious

Calculus1
A car braked with constant deceleration of 16 ft/sec^2 takes 200 ft to come to a complete stop. How fast was the car traveling when the breaks were first applied? A) if the brakes were first applied when t = 0 at position s(0) = 0, the initial velocity is an unknown, say V. ...
Wednesday, April 9, 2014 at 10:43pm by ACDub

physics
a red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. At time , the red car is at and the green car is at . If the red car has a constant velocity of 20 km/h, the cars pass each other at , and if it has a...
Wednesday, January 27, 2010 at 9:41pm by Sean

Physics
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 5.35 m/s2. If the car's initial speed is 29.1 m/s, how long does it take to stop and how far does it travel, starting from the moment the brakes ...
Wednesday, February 24, 2010 at 1:48pm by Delilah

Physics
Thanks you alot for correction. A car is travelling with a 5m/s in 25 minutes at a distance of 30 cm calculate initial velocity and decelaration of the car.
Monday, November 29, 2010 at 11:13am by Abdullah

Physics
Thanks you alot for correction. A car is travelling with a 5m/s in 25 minutes at a distance of 30 cm calculate initial velocity and decelaration of the car.
Monday, November 29, 2010 at 11:15am by Abdullah

Physics
Thanks you alot for correction. A car is travelling with a 5m/s in 25 minutes at a distance of 30 cm calculate initial velocity and decelaration of the car.
Monday, November 29, 2010 at 11:16am by Abdullah

Physics
Thanks you alot for correction. A car is travelling with a 5m/s in 25 minutes at a distance of 30 cm calculate initial velocity and decelaration of the car
Monday, November 29, 2010 at 11:24am by Abdullah

physics
the brakes of a 1000kg car exert a force pf 5000N. How long will it take for them to slow the car to a stop from an initial speed of 24m/s?
Thursday, August 11, 2011 at 9:55am by Anonymous

Science (Physics)
A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 220 m. If the red car has a constant velocity of +20 km/h, the cars pass each ...
Thursday, September 3, 2009 at 6:27pm by Jeff

Physics
A red car and a green car, identical except for color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at x sub r = 0 and the green car is at x sub g = 220m. If the red car has a constant velocity of 20km/h, the cars pass each ...
Wednesday, September 8, 2010 at 6:45pm by Scott

physics
A red car and a green car, identical except for color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at x sub r = 0 and the green car is at x sub g = 220m. If the red car has a constant velocity of 20km/h, the cars pass each ...
Thursday, September 9, 2010 at 6:01pm by Mike

physics
A 100-g toy car is propelled by a compressed spring that starts it moving. The car follows the curved track Show that the final speed of the toy car is 0.687 m/s if its initial speed is 2.00 m/s and it coasts up the frictionless slope, gaining 0.180 m in altitude
Tuesday, March 25, 2014 at 8:33pm by effraim

College Physics
A red car and a green car, identical except for color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at x sub r = 0 and the green car is at x sub g = 220m. If the red car has a constant velocity of 20km/h, the cars pass each ...
Thursday, September 9, 2010 at 12:14pm by Scott

College Physics
A red car and a green car, identical except for color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at x sub r = 0 and the green car is at x sub g = 220m. If the red car has a constant velocity of 20km/h, the cars pass each ...
Thursday, September 9, 2010 at 8:16pm by Peter

physics
A car with an initial speed of 21.9 km/h accelerates at a uniform rate of 0.89 m/s 2 for 3.7 s. Find the final speed of the car. Find the displacement of the car after that time. Answer in units of km
Saturday, September 29, 2012 at 7:05pm by Anonymous

physics
Suppose a cars brakes can produce an acceleration of -7m/s^2. If the car is traveling at an initial speed of 28m/s, what is the minimum distance necessary to stop the car?
Saturday, July 7, 2012 at 11:33am by james

physics ( please help me)
a railroad handcar is moving along striaght, fricionless tracks. In each of the following cases the car initially has a total mass (car and contents of magniude 4.00 m/s^1. Find the final velocity of the car in each of the three cases. A) a 40.0 kg mass is thown sideways out ...
Tuesday, April 3, 2012 at 3:48pm by taylor

Physics
In the figure here, a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 223 m. If the red car has a constant velocity of 22.0 km/h, the cars pass each other at x = 44...
Friday, September 17, 2010 at 12:25am by Anonymous

physics
In the figure here, a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 223 m. If the red car has a constant velocity of 22.0 km/h, the cars pass each other at x = 44...
Tuesday, August 30, 2011 at 11:37pm by Anonymous

physics
If the initial velocity of the car in the previous problem (the car accelerates at 5.00 km/hr/s for 3.50 sec) is 22.6 km/hr, what is the final velocity of the car?
Wednesday, May 18, 2011 at 9:46pm by Daniel

physics
If the initial velocity of the car in the previous problem (the car accelerates at 5.00 km/hr/s for 3.50 sec) is 22.6 km/hr, what is the final velocity of the car?
Wednesday, May 18, 2011 at 9:46pm by tom

Physics
A 1000kg car is traveling along a level road at 20.00ms, when the brakes are applied long enough to do 50000 J of work. 1) what is the initial kinetic energy of the car? 2) if the car moved 100m while the brakes where applied, what was the average force exerted on the brakes.
Tuesday, April 13, 2010 at 4:42am by Kirsten

Physics
A freight car with a mass of 29,000 kg rolls down an inclined track through a vertical distance of 2.8 m. At the bottom of the incline, on a level track, the car collides and couples with an identical freight car that was at rest. What percentage of the initial kinetic energy ...
Wednesday, November 16, 2011 at 5:06am by Yuki

Physics
A railroad car (m=3000 kg) is coasting along a level track with an initial speed of 22 m/s. A load of coal is then dropped into the car as sketched in the figure below. (a) What are the velocities of the car and the coal before the collision along the x direction? Vcar=____m/s...
Saturday, October 27, 2012 at 10:13pm by David

Physics
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 93.0 km/h, to his enemy's car, which is going 130km/h. The enemy's car is 17.0m in front of the Indy's when he lets go of the grenade. 1)If Indy throws the grenade so its initial ...
Thursday, February 24, 2011 at 10:00pm by Anonymous

Physics
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 93.0 km/h, to his enemy's car, which is going 130km/h. The enemy's car is 17.0m in front of the Indy's when he lets go of the grenade. 1)If Indy throws the grenade so its initial ...
Thursday, February 24, 2011 at 10:27pm by Anonymous

physics ( please help me)
a) 4.00m/s b)velocity of object is 0, so your answers should be (Mass of car * 4.00 )/(Mass of car - 40.0 kg) c) 2 initial velocities this time, and the object is going the opposite direction. You should have [(Mass of Car * 4.00) - (40kg *6) ] / (Mass of car + 40kg)
Tuesday, April 3, 2012 at 3:48pm by Anonymous

physics
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 79.0 km/h, to his enemy's car, which is going 102 km/h. The enemy's car is 14.3 m in front of the Indy's when he lets go of the grenade. If Indy throws the grenade so its initial ...
Tuesday, November 16, 2010 at 12:29pm by bobjahng2

College Physics
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 93.0 km/h, to his enemy's car, which is going 130km/h. The enemy's car is 17.0m in front of the Indy's when he lets go of the grenade. 1)If Indy throws the grenade so its initial ...
Thursday, February 24, 2011 at 10:28pm by Anonymous

Physics
A car with good tires on a dry road can decelerate at about 5.0m/s/s when braking. If the car is traveling at 55miles/hour, how much time does it take the car to stop? 55 mph = 80.7 ft/s = 24.6 m/s Divide the initial speed by the deceleration rate to get the time required. (24...
Monday, September 18, 2006 at 8:37pm by Savannah

Physics
In the latest Indian Jones film, Indy is supposed to throw a grenade from his car, which is going 43.8 m/s, to his enemy's car, which is going 55.8 m/s. The enemy's car is 15.2 m in front of the Indy's when he lets go of the grenade. A) If Indy throws the grenade so its ...
Tuesday, August 9, 2011 at 2:22am by Kyle

physics
tad drops a cherry pit out the car window 1 m above the ground while traveling down the road at 18 m/s. a.how far, horizontally, from the initial dropping point will the pit hit the ground? b. if the car continues to travel at the same speed, where will the car be in relation ...
Sunday, October 26, 2008 at 6:13pm by Bailey

Physics
To stop a car, you require first a certain reaction time to begin braking. Then the car slows under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 56.7 m when its initial speed is 80.0 km/h, and 24.4 m when the ...
Sunday, October 3, 2010 at 3:57pm by Bob

Science (Physics)
(a) What is the initial velocity of the green car? (b) What is the acceleration of the green car? Sorry I forgot to post the actual questions.
Thursday, September 3, 2009 at 6:27pm by Jeff

physics
A car moves with an initial velocity of 25ms-1 and reaches a velocity of 45-1 in 10s. What is the acceleration of the car?
Wednesday, June 15, 2011 at 2:49am by Joseph

physics
A car with a mass of 980 kg is initially traveling east toward an intersection with a speed of vc = 18.9 m/s and a 1500 kg pickup is traveling north toward the same intersection. The car and truck collide at the intersection and stick together. After the collision, the ...
Friday, November 30, 2012 at 2:59pm by Diane

physics
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 4.75 m/s2. If the car's initial speed is 32.1 m/s, how long does it take to stop and how far does it travel, starting from the moment the brakes ...
Tuesday, September 13, 2011 at 11:13pm by Nour

physics
The car does the work equal to the initial kinetic energy. Unless it hits a spring, or it is a hybrid car, the work done is converted to heat.
Wednesday, March 3, 2010 at 2:29pm by drwls

physics
A car of mass 907 kg coasts on a level road, starting with an initial speed of 14.2 m/s and coming to rest 15.2 s later. Find the frictional force acting on the car.
Monday, February 20, 2012 at 1:12pm by Brett

Physics
Givent the initial velocity of the car, the driver's reaction time, and the coefficient of friction,find the total distance required far a car to stop. <------ What is the formula that I need to solve this?
Thursday, February 23, 2012 at 4:58pm by TC

Physics
A car traveling with an initial velocity of 68 km/h accelerates uniformly at a rate of 1.35 m/s^2 for 4.7s. Find the final speed and displacement of the car during the specified time interval.
Sunday, January 12, 2014 at 9:26pm by Sam

CALCULUS
A car has constant declaration of 10 km/h/s until it stops. If the car's initial velocity is 120 km/h, determine its stopping distance.
Wednesday, June 16, 2010 at 12:37am by Anonymous

Physics
A roller-coaster car with a mass of 650 kg starts at rest from a point 28 m above the ground. At point B, it is 14 m above the ground. [Express your answers in kilojoules (kJ).] (a) What is the initial potential energy of the car? 1 . kJ (b) What is the potential energy at ...
Monday, March 5, 2012 at 9:56pm by Sara

Physics
A blue car with mass mc = 410.0 kg is moving east with a speed of vc = 23.0 m/s and collides with a purple truck with mass mt = 1248.0 kg that is moving south with a speed of vt = 10.0 m/s . The two collide and lock together after the collision. 1)What is the magnitude of the ...
Monday, October 8, 2012 at 5:22pm by Mike

physics
A roller-coaster car with a mass of 550 kg starts at rest from a point 46 m above the ground. At point B, it is 23 m above the ground. [Express your answers in kilojoules (kJ).] (a) What is the initial potential energy of the car? Incorrect: Your answer is incorrect. . kJ (b) ...
Saturday, September 28, 2013 at 9:29pm by Tammy

physics!
Braking distance increases with the square of the initial velocity, because it depends upon the car's initial klietic energy. What is the square of 1.35?
Tuesday, November 17, 2009 at 10:01pm by drwls

Physics
A car with a mass of 950 kg and an initial speed of v1 = 21.5 m/s approaches an intersection, as shown in the figure. A 1300 kg minivan traveling northward is heading for the same intersection. The car and minivan collide and stick together. If the direction of the wreckage ...
Sunday, October 19, 2008 at 3:17pm by Will

Physics - Momentum of cars at intersection
They already tell you the original DIRECTION of each car's motion. All of the combined momentum in the south direction comes from car A's initial momentum. All of the combined momentum in the east direction comes from car B's initial momentum. Putting that in equation form: ...
Wednesday, September 1, 2010 at 6:12am by drwls

physics
A car with an initial speed of 23.7 km/h accelerates at a uniform rate of 0.92 m/s^2 for 3.6s. Find the final speed and the displacement of the car during this time.
Sunday, October 3, 2010 at 9:20pm by Anonymous

physics
A car with an initial speed of 23.5 km/h accelerates at a uniform rate of 0.98 m/s2 for 4.0 s. Find the final speed of the car. Answer in units of m/s
Friday, September 20, 2013 at 12:35am by Anonymous

physics
A bus and a car have an inelastic head-on collision. The bus has a mass of 1.5 ◊ 103 kilograms and an initial velocity of +20 meters/second. The car has a mass of 9.5 ◊ 102 kilograms and an initial velocity of -26 meters/second. What is their total momentum after the collision?
Tuesday, May 28, 2013 at 12:15pm by Anonymous

Physics
Drew drops a cherry pit out the car window 1.0 m above the ground while traveling down the road at 18 m/s. (a) How far, horizontally, from the initial dropping point will the pit hit the ground? (b) Draw or describe a picture of the situation. (c) If the car continues to ...
Monday, March 7, 2011 at 11:09pm by Anonymous

Physics
train car with mass m1 = 521 kg is moving to the right with a speed of v1 = 7.9 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 5.1 m/s. 1)What is the initial momentum of the first train car? I ...
Friday, March 1, 2013 at 11:44pm by John

Math
Car A is travelling at a constant speed of 100mph at the time it passes a stationary vehicle (Car B). If the Car B hopes to catch Car A within a mile, how fast must Car B travel? Assume Car B can accelerate from 0-60mph in 6 seconds.
Thursday, October 6, 2011 at 3:04pm by Chris

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