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July 28, 2014

Search: A car starts from rest and travels for 7.0 s with a uniform acceleration of +2.2 m/s2. The driver then applies the brakes, causing a uniform acceleration of -1.0 m/s2. If the brakes are applied for 3.0 s, determine each of the following.

Number of results: 19,083

science
If a car is at a stop and it has to travel 2 miles and its speed is zero to sixty in 9 seconds asuming that you give it full power how fast will it be traveling when it travels 2 miles?
November 2, 2010 by Robert

Physics
The car in the figure below travels a distance of 745 m along the track, and the driver finds that she has traveled through an angle of 475. What is the radius of the track?
September 6, 2012 by Anne

Math
The car in the figure below travels a distance of 745 m along the track, and the driver finds that she has traveled through an angle of 475. What is the radius of the track?
September 6, 2012 by Anne

Physics
A skier starts from rest at the top of a hill that is inclined at 12.0 with the horizontal. The hillside is 180.0 m long, and the coefficient of friction between the snow and the skis is 0.0750. At the bottom of the hill, the snow is level and the coefficient of friction is ...
March 18, 2012 by smh

Physics
please i need help with this question. Initailly at rest, a car (mass=1300kg) accelerates north from a set of traffic lights at a constant rate for 10s. 11s after starting to accelerate it crosses an intersection and is hit by a second car (mass=1224kg) heading west at 65k/h. ...
April 26, 2012 by Rachel

science 3rd grade
how is the distance a model car travels affected by the angle of the ramp. 6" ramp & 9" ramp
January 6, 2009 by michael

physics 1
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.13 s, and the velocity of the car decreases to +4.90 m/s. The car's deceleration has a magnitude of 3.55 m/s2 during this time. What is the car's displacement?
July 1, 2014 by rrrr

pyramids
a car travels 35 km in the first 20 minutes, 43 km in the second 30 minutes and 19 km in the last 18 minutes of a trip. what is the average speed in Km/mn?
January 8, 2011 by Eloise

Physics
A 2.0103 kg car accelerates from rest under the action of two forces. One is a forward force of 1153 N provided by traction between the wheels and the road. The other is a 939 N resistive force due to various frictional forces. How far must the car travel for its speed to ...
January 22, 2011 by Sangita

phsyics
A car races on a circular track of radius r. (a) Write an equation for the car's average speed when it travels a complete lap in time t. (b) The radius of the track is 100 m and the time to complete a lap is 14 s. Show that the average speed around the track is 45 m/s.
March 19, 2014 by price

#2
A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 335 km/h in a semicircular arc with a radius of 190 m. Determine the tangential acceleration of the car when it is halfway through the turn, assuming constant tangential acceleration. (in...
October 9, 2006 by Britt Pogue

Physics
An airplane originally at rest on a runway accelerates uniformly at 6.2 m/s2 for 12 sec. During this 12 sec-interval the air plane travels an approximate distance of?
February 18, 2013 by Arria

physics
A thief is trying to escape from a parking garage after completing a robbery, and the thief's car is speeding (v = 14 m/s) toward the door of the parking garage (see figure). When the thief is L = 31 m from the door, a police officer flips a switch to close the garage door. ...
September 16, 2011 by simi

College Physics
A cyclist starts from rest and pedals so that the wheels make 7.7 revolutions in the first 5.1 s. What is the angular acceleration of the wheels (assumed constant)?
September 25, 2009 by Megan

Physics
A 4.0-kg block is at rest on a horizontal floor. If you push horizontally on the 4.0-kg block with a force of 12.0 N, it just starts to move. What is the coefficient of static friction?
February 21, 2010 by Max

Physics
A 3.0-kg block is at rest on a horizontal floor. If you push horizontally on the 3.0-kg block with a force of 12.0N it just starts to move. What is the coefficient of static friction?
September 15, 2010 by Jake

Physics
An object wuth a mass of .5 kg starts from rest and achieves a maximum speed of 20m/s in 0.01 s. What average unbalanced force accelerates this object?
November 21, 2011 by Ronaldo

Physics
A torque of 60 N*m acts on a wheel of moment of inertia 30 kg*m^2 for 5 s and then is removed. a) What is the angular acceleration of the wheel? rad/s^2 b) How many revolutions does it make in 15 s if it starts at rest?
November 28, 2011 by John

physics
An automobile starts from rest and 110 ft attains a speed of 30 mi/h. In what time has it traveled this distance and the is the acceleration? -when is the acceleration of the object positive and negative?
July 30, 2012 by zianna

Physics
An automobile with 0.80-m diameter wheel starts from rest and accelerates uniformly to 22 m/s in 0.7 s. Through how many revolutions does the front wheel turn during this period?
February 25, 2013 by Cindy

physics
a force of 890n acts on a body that weighs 265n if the body starts from rest, how fast will it be going after it has moved 3.00m
February 13, 2014 by lml

physics
A bus starts frm rest and moves with a uniform acceleration of (1m/secondsquare) for 5 minutes. calculate the velocity and distance?? plz explain and also give me the correct answer
July 6, 2012 by Maihul

physics - i need A.S.A.P
A truck traveling at a constant speed of 30.6 m/s passes by a police car which is at rest. The police officer catches up to the truck in 700 m, maintaining a constant acceleration. i)Calculate how long it took the police's car to overtake the truck speeder
May 2, 2011 by alya

math
six cars are parked in front of a car dealership. If you are looking at the cars from the front. the red car is parked in front of the green car. the black car is between the green and the yellow car. The blue car is parked on the right side of the red car. the orange car is ...
September 20, 2011 by jen

Physics
A 1500 kg truck travels at 30m/s. It faces a force of 400 N from air resistance, what is the car's average power output? Is the answer 675 kw?If not please help me in any way you can,by showing the formula you used.
March 4, 2009 by Harold

physics
school question? A long jumper travels 8.95 meters during a jump. He moves at 10.8 m/s when starts his leap. At what angle from the horizontal must he have been moving when he started his jump? You may need the double-angle formula: 2 sin u cos u = sin (2u)
December 15, 2010 by kevin giordano

PHYSICS
A 745i BMW car can brake to a stop in a distance of 122 ft from a speed of 60.0 mi/h. To brake to a stop from a speed of 80.0 mi/h requires a stopping distance of 221 ft. What is the average braking acceleration for the following intervals? Express the answers in mi/h/s and in...
November 1, 2008 by lance

physics
a car accelerates from rest at a constant rate 'a' for some time. after which it decelerates at a constant rate'b' and comes to rest. if the total time elapsed is t second, evaluate 1) the maximum velocity reached and 2) the total distance travelled.
July 13, 2011 by pavatharani

Physics
On its way to Peace River, Alberta, a car enters a passing zone on the highway. The car is 25.0 m behind a truck and both vehicles are travelling at 41.0 m/s. The car accelerates uniformly to overtake the truck and after the car has travelled 280m, it is 25.0 m ahead of the ...
September 22, 2007 by Sammy

Zeeland WEST
In a car accidnet involving a sports car, skid marks as long as 290 m were left by the car as it decelearted to a complete stop. The police report cited the speed of the car before breaking as beeing in excess of 100mph 161 km/m. Suppose that i took 10 seconds for the car to ...
September 29, 2010 by Abrahm

math
A circular racetrack has a diameter of 200 meters. What is the approximate distance a car travels in meters for three full revolutions around the track? use 3.14 for pie.
November 21, 2010 by Abby

physics
a race car travels northward on a straight level track at a contant speed traveling 0.750 km in 20.0s. the return trip over the same track is madein 25.os
February 17, 2011 by Anonymous

math
A car travels at an average speed of 36 kilometers per hour. Write and solve an equation to predict how many hours if will take travel 432kph. It if continues of this speed.
June 21, 2011 by jewel padilla

Physics
A wire is frictionless between points A and B and rough between B and C. A is 5m above the ground, B is zero, and C is 2m above the ground. The 0.400kg bead starts from rest at A. If the bead comes to rest at C, find the loss in mechanical energy as it goes from B to C. I can'...
November 6, 2011 by Katie

Math
A man starts walking north at 5 ft/s from a point P. Five minutes later a woman starts walking south at 4 ft/s from a point 500 ft due east of P. At what rate are the people moving apart 15 min after the woman starts walking?
November 2, 2012 by AH

Math
A first time car buyer is looking for a good used car to purchase. In addition to the cost of the car, there is a licensing fee of $140 and sales tax of 10% of the cost of the car. If the buyer only has $6740 to spend, what is the most expensive car that can be purchased?
September 23, 2007 by Jessica

AP Physics
A Honda Civic and Lincoln Town Car are initially at rest on a horizontal parking lot at the edge of steep cliff. The Town Car has twice as much mass as the Civic. Equal constant forces are applied to each car and they accelerate across equal distances (ignore effects of ...
December 3, 2009 by Hannah

PHYSICS-URGENT HELP
A stationary police car emits a sound of frequency 1200 Hz that bounces off of a car on the highway and returns to the police car with a frequency of 1250 Hz. The police car is right next to the highway, so the moving car is traveling either directly towards or directly away ...
July 29, 2011 by Brit

physics
Two cars are traveling at the same constant speed v. Car A is moving along a straight section of the road, while B is rounding a circular turn. Which statement is true about the acceleration of the cars? a.) acceleration of both cars is zero b.) car A is accelerating but car B...
October 19, 2010 by jo

science
calculate the distance an object travels if its speed is 60km/h and it travels for 6h
January 9, 2011 by fg

Physics
A 46.0 kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.85 m/s in 1.07 s. It travels with this constant speed for the next 6.80 s. The elevator then slows down (undergoes a uniform acceleration in the ...
September 9, 2011 by Elisabeth

Physics
A dragster travels 1/4 mile in 6.1 seconds. Assuming the acceleration is constant and the dragster is initially at rest, what is the velocity when it crosses the finish line?plese explain.
August 26, 2012 by Cin

Physics
A sports car accelerates from rest to 89 km/h in 6.1s . What is its average acceleration in
October 21, 2010 by Emily

Physics
A sports car accelerates from rest to 89 km/h in 6.1s . What is its average acceleration in
October 21, 2010 by Emily

physics
A sports car accelerates from rest to 100 km/h in 6.25. What is the acceleration in m/s^2?
September 18, 2012 by EJ

physics
A car slows down from 40 km/hr to rest in a distance of 72 m. What was its acceleration
October 10, 2012 by terrell

Science
True or false: light travels in straight lines if the medium it travels doesn't change
September 26, 2012 by Sam

Physics
An object with charge qo = 1.5μC and mass 0.7 g starts from rest at the +6V equipotential line. Calculate its change in potential energy and speed when it reaches the +2V line.
February 15, 2010 by Amy

Physics
An object with charge qo = 1.5μC and mass 0.7 g starts from rest at the +6V equipotential line. Calculate its change in potential energy and speed when it reaches the +2V line.
February 16, 2010 by Amy

Physics
A 4.3 kg particle starts from rest and moves a distance of 3.6 m in 2.5 s under the action of a single, constant force. Find the magnitude of the force. Answer in units of N.
September 27, 2010 by Wendia

Physics
A 3.9 kg particle starts from rest and moves a distance of 2.4 m in 2.4 s under the action of a single, constant force. Find the magnitude of the force. Answer in units of N.
October 4, 2010 by Wendia

physics
A child and sled with a combined mass of 50.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.40 m/s at the bottom, what is the height of the hill?
March 9, 2011 by Allie

Physics
A ball starts from rest down a smooth (frictionless) 45 degree inclined plane 10 m above the floor. How fast will it be going when it reaches the floor?
March 19, 2011 by Rodney

physics
A child and sled with a combined mass of 59.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.40 m/s at the bottom, what is the height of the hill?
January 9, 2012 by ann

Physics
F=6kt This force acts on a particle of mass "m" that moves along a line. If the particle starts from rest, determine its velocity and position at time t.
November 12, 2012 by shawn

physics
a clothes washer starts from rest and spins up with an angular accceleration of 10/rad/s^2. Determine the angle through which the washer has moved afer 6 seconds.
November 28, 2012 by anna

physics
a block of a mass starts from rest and slides down a surface which correspnds to a quarter of a circle. if the curved surface is smooth, what is the speed at the bottom?
April 22, 2013 by mojalefa

physics
a train starts from rest and accelerates uniformly to achieve a velocity of 20m/sec in 10 sec.then train maintains this speed for next 200 sec.the breaks are then applied and train comes to rest in next 50 sec.calculate a)acceleration in first 10 sec. b)acceleration in last 50...
May 28, 2012 by parul

physics
a train starts from rest and accelerates uniformly to achieve a velocity of 20m/sec in 10 sec.then train maintains this speed for next 200 sec.the breaks are then applied and train comes to rest in next 50 sec.calculate a)acceleration in first 10 sec. b)acceleration in last 50...
May 30, 2012 by parul

physics
a train starts from rest and accelerates uniformly to achieve a velocity of 20m/sec in 10 sec.then train maintains this speed for next 200 sec.the breaks are then applied and train comes to rest in next 50 sec.calculate a)acceleration in first 10 sec. b)acceleration in last ...
May 30, 2012 by PLZ HELP ME NOW...

calculus
A man starts walking north at 3ft/s from a point P. Five minutes later, a woman starts walking south at 6ft/s from a point 500ft due east of P. At what rate are the people moving apart 15min after the woman starts walking?
November 17, 2011 by L.J

math
A man travels 4km due north,then travels 6km due east and further travels 4km due north .how far he is from the starting point.
April 22, 2013 by nripesh

Maths
At 9.30 a.m., a car left town X for town Y at a speed of 60km/h for the whole journey. At 11 a.m., a lorry started from town Y and travelled towards town X. The speed of the lorry remained the same until it passed the car at 12.30 p.m. The lorry passed the car at midpoint ...
December 30, 2013 by Sarah

physics
a 1500 kg car travelling at 16.7 m/s to the south collides with a 6300 kg truck that is initially at rest at a stop light. the car and the truck sticks togetherand moves together after the collision. what is the final velocity of the two-vehicle mass? answer in units of m/s.. ...
May 30, 2011 by OMAR

AP ECE Physics
A car at the Indianapolis-500 accelerates uniformly from the pit area, going from rest to 295 km/h in a semicircular arc with a radius of 190 m. Determine the tangential acceleration of the car when it is halfway through the turn, assuming constant tangential acceleration. 5....
October 9, 2012 by John Conlan

Physics
A car moving with a constant acceleration covers the distance between two points 60 m apart in 6.0 s. Its velocity as it passes the second point is 17 m/s. a) What was the speed at the first point? b) What is the constant acceleration? c) How far behind the first point was the...
September 4, 2007 by Jayd

physics
A car moving with a constant acceleration covers the distance between two points 80 m apart in 8.0 s. Its velocity as it passes the second point is 14 m/s. (a) What was the speed at the first point? 1 m/s (b) What is the constant acceleration? 2 m/s2 (c) How far behind the ...
September 2, 2011 by Erin

physics
A car moving with a constant acceleration covers the distance between two points 80 m apart in 8.0 s. Its velocity as it passes the second point is 15 m/s. (a) What was the speed at the first point? (b) What is the constant acceleration? (c) How far behind the first point was ...
October 22, 2011 by Ruby

physics
An object starts falling under gravity from rest. If it completes 9/25 of its journey within the last second. Find the total time taken and the total displacement?
September 12, 2009 by jojo

Physics
A baby sitter pushing a stroller starts from rest and accelerates uniformly at a rate of 0.682 m/s2. What is the velocity of the stroller after it has traveled 7.74 m? Answer in units of m/s.
January 10, 2011 by Michael

Physics please help!!
A 60cm diameter bike wheel starts at rest and develops an angular speed of 12.0 rad/s in 10 seconds. What linear distance does the bike travel?
February 22, 2011 by Megan

Physics
A 18 kg child slides down a 4.0 m-high playground slide. She starts from rest, and her speed at the bottom is 2.8 m/s. What is the change in the thermal energy of the slide and the seat of her pants?
May 14, 2011 by Anne

physic
A baby sitter pushing a stroller starts from rest and accelerates uniformly at a rate of 0.511 m/s 2 . What is the velocity of the stroller after it has traveled 5.38 m? Answer in units of m/s
September 7, 2011 by Renee

physics
An airplane starts from rest and moves forward with a constant acceleration of 5 m/s2 along a runaway 250 m long. How long does it take the plane to reach a speed of 46.0 m/s?
January 14, 2012 by tracy

physics
A baby sitter pushing a stroller starts from rest and accelerates uniformly at a rate of 0.770 m/s 2 . What is the velocity of the stroller after it has traveled 5.94 m? Answer in units of m/s
December 13, 2012 by Anonymous

physics
A charged particle of mass 8.3910−4 kg starts from rest and accelerates through a potential difference of +25,000 V to reach a speed of 1170 m/s. What is the charge on this particle?
November 14, 2013 by linda

physics
A coin is dropped from the Leaning Tower of Pisa. It starts from rest and falls freely. Neglecting air resistance, compute the coin's position and velocity at 1.0 s, 2.0 s and 3.0 s.
April 27, 2014 by amiel

math
a carload of fraternity brothers leave their house for a long weekend trip. three hours later a second carload of brothers leaves the same house and travels the same path. if the second care drives and average of 15 mph faster than the first, what is the average speed of eavh ...
September 9, 2013 by Haley

Physics 221
An object starts from rest at the origin and moves along the x axis with a constant acceleration of 4m/s^2. Its average velocity as it goes from x=2m to x=8m is: A. 1m/s B. 2m/s C. 3m/s D. 5m/s E. 6m/s An object is released from rest and falls a distance H during the first ...
August 26, 2007 by Joshua

physics
How would I graph a collision. i.e if I have a problem A 12,000 kg railroad car traveling at a speed of 19 m/s strikes an identical car at rest. If the cars lock together as a result of the collision, what is their common speed afterward? What would my x axis be and what would...
January 25, 2010 by Brendan

algebra (23)
How do you set up this problem? A boater travels 16 miles per hour on the water on a still day. During one particular windy day, he finds that he travels 48 miles with the wind behind him in the same amount of time that he travels 16 miles into the wind. Find the rate of the ...
November 9, 2007 by Anita

physics
A 1970 kg car traveling at 13.8 m/s collides with a 2960 kg car that is initally at rest at a stoplight. The cars stick together and move 1.91 m before friction causes them to stop. Determine the coefficient of kinetic friction between the cars and the road, assuming that the ...
October 12, 2011 by sidney

Physics
How much work is done in accelerating a 2000 kg car from rest to a speed of 30 m/s?
February 27, 2011 by Lesley

phy
a car rolls down an incline starting from rest A graph
September 20, 2011 by ana

Physics
If a car accelerates from rest to 15 m/s for a distance of 200 m. What is the magnitude of acceleration?
June 25, 2012 by Lollie

Physics
If your car accelerates from rest at a steady rate of 4 m/s2, how soon will it reach 84 km/h
September 12, 2012 by Tonya

Physics
If your car accelerates from rest at a steady rate of 4 m/s2, how soon will it reach 84 km/h
September 12, 2012 by Tonya

physics
a race car accelerates from rest at +7.2 m/s^2 for 4.5 s. How fast will it be going at the of that time ??
November 6, 2012 by ashley

Physics HW Help, Please
What is the energy required to accelerate a 1600 kg car from rest to 33 m/s?
December 1, 2012 by Mike

Physics
How long in seconds does it take for a car accelerating at 3.5m/s2 to go from rest to 120km/hr
February 27, 2013 by Ronnie

physics
A sports car moving at constant speed travels 120 m in 5.1 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be the direction of travel.)
August 18, 2011 by Hal

Physics
A circular automobile racetrack is banked at an angle theta such that no friction between road and tires is required when a car travels at 28.0 m/s. If the radius of the track is 390 m, determine theta .
February 11, 2012 by J

physics
Each of the four wheels of a car push on the road with a force of 4.0*10^3 N [down]. The driving force on the car is 8.0*10^3 N [W]. The fictional resistance on the car is 6.0*10^3 [E]. Calculate the following A) the mass of the car B) the net force on the car C) the cars ...
March 29, 2012 by Maggie

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?
August 25, 2007 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?
August 26, 2007 by Jayd

Physics
Ports A and B are 400 miles apart. One boat starts from port A for port B at 6:05 and travels with a constant speed of 12 mph. If it leaves port A at 8:20, what speed musta a second boat have to arrive at port B at the same time? Explain your reasoning.
September 19, 2010 by JD Smith

Physics
Ports A and B are 400 miles apart. One boat starts from port A for port B at 6:05 and travels with a constant speed of 12 mph. If it leaves port A at 8:20, what speed musta a second boat have to arrive at port B at the same time? Explain your reasoning.
September 19, 2010 by JD Smith

physics
Two cars start from rest at the same location and at the same instant and race along a straight track. Car A accelerates at 6.6 fps2 to a speed of 90 mph and then runs at this constant speed. Car B accelerates at 4.4 fps2 to a speed of 96 mph and then runs a a constant speed...
January 22, 2011 by David

Physics
During a football game, A is 8.0 m behind B and is running at 7.0 m/s when B catches the ball and starts to accelerate away at 2.8 m/s(squared) from rest. a) Will A catch B? If so, after how long? b) How far down the field will B have run?
September 7, 2008 by Julio

Physics
(ii) For the wheel of diameter 10 cm, find its final speed after traversing a distance of 10 m down an incline of 25. Assume it starts from rest. I know i have to use the conversation of enrgy formula but how do i apply it to this instance?
August 9, 2010 by Oisin

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