Sunday

January 22, 2017
Number of results: 48,145

**Trigonometry**

A car traveling at a constant rate due east passes an interstate exit that is 1.0 mile from a gas station. The gas station is S50°E of the exit. After the car has traveled for 2.0 minutes, its bearing to the gas station is S55°W. How fast is the car traveling?

*September 29, 2014 by Theresa*

**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...

*September 18, 2006 by Savannah*

**physics**

A truck is traveling at 12 m/s down a hill when the brakes on all four wheels lock. The hill makes an angle θ = 15° with respect to the horizontal. The coefficient of kinetic friction between the tires and the road is 0.7. How far does the truck skid before coming to a ...

*October 9, 2010 by jamie*

**Physics**

A truck with a mass of 2200 kg, moving at 31 m/s (69 mph), crashes into an immovable wall. It crumples; after the collision, the truck is 0.65m shorter in length than it was before. What is the average speed and how long did the collision last? I was confused on how to start ...

*September 7, 2015 by Krys*

**science(1answer)**

4.how does the kinectic energy of a 10,000-kg train traveling at a speed of 10 m/s compare with that of a 2,600-kg compact car traveling twice as fast? A.the train has less kinectic energy than the car. B.the train has more kinectic energy than the car.(I PICK THIS) C.the ...

*January 29, 2014 by annabelle*

**Physics**

The car in front of you is driving 105 km/h on the highway. You pull out to pass the car travelling 114 km/h. Both cars are 2.7m long. You pull out when you are 10m behind the car in front of you and pull back in when you are 10m in front of the other car. How long does it ...

*July 8, 2012 by John*

**physics**

A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x value does the tennis ...

*November 20, 2010 by sandhu*

**physics**

A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x value does the tennis ...

*November 21, 2010 by sandhu*

**physics**

A firetruck is traveling at a velocity of +20 m/s in the x direction. As the truck passes x=63m it shoots a tennis ball backwards with a speed of 20 m/s relative to the truck at an angle of 39° from a height of 1.4 m. Neglect air resistance. At what x value does the tennis ...

*November 21, 2010 by sandhu*

**physics**

A train is moving parallel and adjacent to a highway with a constant speed of 23 m/s. A car is traveling in the same direction as the train at 46 m/s. The car’s horn sounds at 550 Hz and the train’s whistle sounds at 360 Hz. When the car is behind the train what fre- ...

*January 26, 2014 by Need answer by 10pm*

**Physics**

A 1500kg car skids to a halt on a wet road where μk= 0.53. How fast was the car traveling if it leaves 62-m-long skid marks?

*October 28, 2009 by Angela*

**physics**

A train is moving parallel to a highway with a constant speed of 16.0 m/s. A car is traveling in the same direction as the train with a speed of 36.0 m/s. The car horn sounds at a frequency of 504 Hz, and the train whistle sounds at a frequency of 314 Hz. (a) When the car is ...

*March 25, 2012 by Anonymous*

**Physics**

The front 1.20 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 22.0 m/s stops uniformly in 1.20 m, how long does the collision last? s (b) What is the magnitude of the average force on the car? N (c...

*October 4, 2011 by Allie*

**physics**

The front 1.20 m of a 1,350-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 21.0 m/s stops uniformly in 1.20 m, how long does the collision last? s (b) What is the magnitude of the average force on the car? N (c...

*March 3, 2016 by mark*

**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!

*February 16, 2014 by Anonomous*

**Physics Homework**

Could you please check my answers? Thanks! 1. You push a heavy car by hand. The car, in turn, pushes back with an opposite but equal force on you. Doesn’t this mean the forces cancel one another, making acceleration impossible? Why or why not? -No, because in order to ...

*September 11, 2007 by Soly*

**Physics**

) A car is traveling on a straight, horizontal road at 20 m/s when the driver slams on the brakes. The force of friction between the car and the road is 900 N. The mass of the car is 1800 kg. (a) Make a free body diagram for the car on the set of axes provided. (b) How far ...

*November 4, 2016 by Tommy*

**physics**

A crate of mass 96 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.14. What is the smallest radius of curvature, R, the truck can take, if the speed with which it is going around a circle is 2.9 m/s?

*November 13, 2012 by Josh*

**Physics**

A car traveling 91km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.93m . What was the magnitude of the average acceleration of the driver during the collision? Express the answer in terms of "g's," where 1.00g=9.80m/s2

*September 11, 2014 by Anonymous*

**physics**

A car traveling 56 km/h is 24 m from a barrier when the driver slams on the brakes. The car hits the barrier 2s later a) what is the car's constant deceleration before the impact? b)How fast is the car traveling at impact? I don't get the impact parts... I'm not entirely sure ...

*September 11, 2006 by sarah*

**mechanics of dynamic**

A thief escapes and boarded on a truck and traveled at a constant speed of 55kph. Two hours later after the truck left , a policeman pursued the truck at a constant speed of 80kph. How long it did take the policeman to catch up the thief ?

*May 31, 2015 by von gwapo*

**physics**

Two cars, one in front of the other, are traveling down the highway at 25 m/s. The car behind sounds its horn, which has a frequency of 500 Hz. What is the frequency heard by the driver of the lead car? (vsound = 340 m/s). I have the answer but I just don't know how to get it...

*July 12, 2010 by Katie*

**math**

The stopping distance of a car traveling 25mph is 61.7ft, and for a car traveling 35mph it is 106ft. The stopping distance in feet can be described by the equation y=ax^2 + bx + c, where x is the speed in mph. Find the values of a and b.

*October 21, 2011 by Alyssa*

**College Physics**

A car initially traveling northeast (45° N of E) at 28.3 m/s takes 6.0 s to turn to the east. After the turn, the car is traveling due east at 20.0 m/s. What is the value and direction of the change in velocity?

*September 19, 2010 by Angela*

**Physics**

How fast would a 9-g fly have to be traveling to slow a 1790-kg car traveling at 58 mph by 4 mph if the fly hit the car in a totally inelastic head-on collision?

*June 6, 2012 by Emily*

**physics**

How fast would a 4-g fly have to be traveling to slow a 1890-kg car traveling at 51 mph by 6 mph if the fly hit the car in a totally inelastic head-on collision?

*March 5, 2013 by Michael*

**physics**

If there is a constant towing force of 1.5 kN, how long would it take a tow truck to tow a 1400 kg car from rest to 52 km/h? (Assume a rolling resistance of 215 N).

*February 8, 2015 by nesh*

**Algebraic**

Salem and Vernon ville are 168 miles apart. A car leaves Salem traveling towards Vernonville, and another car leaves Vernonville at the same time, traveling towards Salem. The car leaving Salem averages 10 miles per hour more than the other and they meet after 1 hour and 36 ...

*April 1, 2013 by Evelyn*

**Math**

A car leaves town traveling 35 MPH. Two hours later a 2nd car leaves, in the same direction traveling 55 MPH.In how many hours will the 2nd car be passing the first?

*September 7, 2016 by Jacob*

**Physics**

Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 22.0 m/s. At the same time, car 2 is 1.4 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding up with an acceleration of magnitude 3.0 m/s2 ...

*October 3, 2012 by Anonymous*

**math**

the distance of D in feet it takes a car traveling at x mph to come to a full stop after hitting the brakes is given by d= 1.26x^2+ .075x. Est. the stopping distance for a car traveling at 40 mph

*December 17, 2010 by cynthia*

**Khudu secondary**

Car A of mass 1 000 kg,stationary at a traffic light,is hit from behind by car B of mass 1 200 kg,traveling at 18 m.s-1. Immediately after the collision car A moves forward at 12 m.s-1. 1. Assume that linear momentum is conserved during this collision. Calculate the speed of ...

*March 10, 2013 by Antony*

**Physics**

Need Help with physics! Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 17.0 m/s. At the same time, car 2 is 1.3 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding up with an ...

*October 4, 2012 by Brandon*

**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 ...

*October 16, 2011 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...

*October 17, 2011 by PHY*

**Physics**

How fast would a 9-g fly have to be traveling to slow a 1910-kg car traveling at 61 mph by 6 mph if the fly hit the car in a totally inelastic head-on collision? Could someone explain the steps, please?

*June 6, 2012 by Jeremy*

**college physics**

A truck of mass 9M is moving at a speed v = 15 km/h when it collides head on with a parked car of mass M. Spring mounted bumpers ensure that the collision is essentially elastic. Find the final velocities of each vehicle. Repeat for the case of the car moving at speed v= 15 km...

*May 14, 2010 by Adam*

**physics**

Damon, thanks for your answer. Consider that the 20lb object is being pulled behind a bid rig truck traveling at 90mph, can it then be calculated as to what amount of horsepower, is being provided to move (in our case) a 20lb object, traveling at 90mph. If yes,what amount of ...

*August 2, 2011 by david*

**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?

*February 26, 2013 by El*

**physics**

A car sits in an entrance ramp to a freeway, waiting for a break in the traffic. The driver sees a small gap between a van and an 18-wheel truck and accelerates with constant acceleration along the ramp and onto the freeway. The car starts from rest, moves in a straight line, ...

*September 29, 2013 by Emma*

**physics**

A 250 kg car starting from rest is pushed 30m. When the car reaches 30m, it’s traveling at a speed of 12m/s and it encounters 52N of friction. What is the acceleration of the car and what is the force of the push on the car?

*December 1, 2010 by Alyssa*

**Physics**

A speeding motorcyclist is traveling at a constant speed of 31.1 m/s when he passes a police car parked on the side of the road. The radar, positioned in the police car's rear window, measures the speed of the motorcycle. At the instant the motorcycle passes the police car, ...

*September 5, 2014 by Hamad*

**Math**

A car leaves town traveling at 35 MPH. A 2nd Car leaves Town 2 hours later traveling in the same direction. In how many hours will the 2nd car be passing the first.

*September 7, 2016 by Jacob*

**Physics**

A tow truck is pulling a car out of a ditch by means of a steel cable that is 9.3 m long and has a radius of 0.50 cm. When the car just begins to move, the tension in the cable is 1070 N. How much has the cable stretched? Answer in m

*November 30, 2012 by Elizabeth*

**physics**

A car is traveling at 95km/hr. the driver steps on the brakes and the car comes to a stop in 60m. What is the car's deceleration?

*September 5, 2013 by Grace*

**Physics**

At t = 0, an automobile traveling north begins to take a turn. It follows one-quarter of the arc of the circle of radius 9.8 m until, at t = 1.38 sec, it is traveling east. The car does not alter its speed during the turn.

*September 23, 2013 by Jenn*

**Physics**

1. Car A, with mass of 1250 kg, is travelling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, travelling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s to the west. What will...

*April 8, 2014 by Jaime*

**math**

Mary and John are 128 miles apart. A car leaves Mary traveling towards John and another car leaves John at the same time traveling towards Mary. The car leaving Mary averages 10 miles per hour more than the other car and they meet after 1 hour and 36 minutes. What are the ...

*March 20, 2015 by Pater*

**Physics**

A tow truck exerts a force of 3000 N on a car, accelerating it at 2 m/s2 . What is the mass of the car?

*February 1, 2011 by Peter*

**Physics - Momentum of cars at intersection**

Car A(1750kg) traveling due south and car B (1450kg)due east. They reach the same intersection at the same time and collide. The cars lock together and move off at 35.8km/h[E31.6degS]. What was the velocity of each car before the collided? I tried this question using the law ...

*September 1, 2010 by Shaila*

**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 ...

*February 5, 2013 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 ...

*February 5, 2013 by RR*

**Science**

A car is traveling at 65 km/hr. The brakes are applied and the car stops in 3 seconds. What is the car's acceleration?

*December 1, 2015 by Lana*

**physics**

A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure. The length of the arc ABC is 259 m, and the car completes the turn in 38.0 s. a)Determine the car's speed.m/s b)What is the magnitude and direction of the ...

*October 18, 2012 by Karrine*

**PHYSICS**

A tow truck is pulling a car out of a ditch by means of a steel cable (Y = 2.0 x 1011 N/m2) that is 9.73 m long and has a radius of 0.550 cm. When the car just begins to move, the tension in the cable is 859 N. How much has the cable stretched?

*November 4, 2015 by Anonymous*

**Analytical Mechanics**

A car traveling at 100Km/hr smashes into a concrete abutment. Show that the collision is the equivalent to driving off the top of a ten story building. Allow 4 meter per story and neglect air resistance. Next, find the equivalent vertical height to represent the effect of a ...

*February 8, 2011 by Garrett*

**phy111**

A truck is moving at a speed of 70km/h. The exhaust pipe above the truck cab sends out a trail of smoke that makes an angle of 20o east of south behind the truck. If the wind is blowing directly toward the east, what is the wind speed at that location?

*August 12, 2014 by samson*

**Physics**

A truck is stopped for a red light at Ridge Road on Higgins line. At the instant the light turns green, the truck pulls away with a constant acceleration of 3.3 m/s2. A cyclist approaching the truck with a constant velocity of 12.0 m/s is 8.60 m behind the truck when the light...

*October 5, 2011 by Nick*

**Phsycis 203**

You're standing by the roadside as a truck approaches, and you measure the dominant frequency in the truck noise at 1105Hz . As the truck passes, the frequency drops to 885Hz. What is the truck's speed?

*May 11, 2010 by Mike*

**physics**

A tow truck is connected to a 1500 kg car by a cable that makes a 27 degree angle to the horizontal. If the truck accelerates at 0.58 m/s^2, what is the magnitude of the cable tension? Neglect friction and the mass of the cable.

*April 1, 2012 by ian*

**physics**

On the once popular show “Knight Rider,” the tricked-out car (for the 80s, anyway), Kit, 1. drives up a ramp and into the back of a semi truck while the truck is moving. A viewer once expressed disbelief that this is possible. Assuming that Michael Knight (the driver) can ...

*October 27, 2015 by reddy*

**Physics**

A truck travelling at 50 kph. It brakes retarding it at 5 m/sec. How long it will take up to stop the truck? What distance reached it when it finally stop?

*November 24, 2016 by Ilith*

**physics**

A 1200 kg car is traveling at 45 km/h and hits a 1000 kg car parked on the edge of a 70 m deep canyon. What is the velocity of the two car wreck?

*January 12, 2011 by matt*

**physics**

A crate of mass 97 kg is loaded onto the back of a flatbed truck. The coefficient of static friction between the box and the truck bed is 0.26. What is the smallest radius of curvature (in m) that the truck can take, if the speed with which it is going around a circle is 44 m/...

*October 4, 2010 by Becky*

**physics**

Car traveling on circular track. Point A is at positive x,y. Point B is at positive x, negative y. A car is traveling around a horizontal circular track with radius r = 220 m as shown. It takes the car t = 51 s to go around the track once. The angle èA = 31° above the x axis...

*October 7, 2013 by Anonymous*

**physics**

the 900 kg car was traveling south and collided with the 2000kg car traveling west. they both got tangled and moved away from the impact point as one mass at 16.0m/s in the direction 24degrees west of south. what was the initial speed of each prior to the collision?

*August 11, 2014 by kristen*

**math**

the position of a car in time t (in hours) is (-10+45t,40+70t) and a truck (40-40t,20+75t) find the distance between the car and the truck at time t=0 in km) i have 53.9km to 1dp find an expression for d^2 in terms of t) I have 7250t^2 -8700t+290 Complete the square which I ...

*November 30, 2016 by s17*

**Physics**

A 1500 kilogram car skids to a hold on a wet road where the coefficient of kinetic friction is 0.5. How fast was the car traveling if it leaves 65 meter long skid marks?

*November 9, 2016 by Anonymous*

**Physics**

Read each statement below. For each situation, calculate vi, vf, pi, pf, the impulse vector Ft, and the amount of force needed for the change to occur. All situations refer to a truck with a mass of 2840 kg. 1. The truck has a velocity of 8.30 m/s and comes to a stop...

*February 7, 2011 by SARAH*

**Adv. Math**

I don't understand these problems =/ How many inches are in 3/8 of a foot? How long would it take a car traveling 60 mph to go 250 miles?

*February 28, 2008 by Kenya Ruiz*

**Physics**

A car and a truck travel with same velocity, the car has more kinetic energy. True or false

*August 18, 2010 by Anonymous*

**physics**

A speeder traveling at a constant speed of 117 km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (7.6 km/h)/s until it reaches its maximum speed of 175 km/h, which it maintains until it catches up with the speeder.(a) How long does it ...

*June 10, 2016 by Ace*

**physics**

3. In the figure, a runaway truck with failed brakes is moving downgrade at 107 km/h just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of θ = 14°. The truck's mass is 1.4 × 104 kg. (a) What minimum length L must the ramp...

*April 7, 2013 by Samira*

**algebra**

Can someone please tell me if I did this problem right? A new truck that sells for $29,000 depreciates 12% each year. Write a function that models the value of the truck. Find the value of the truck after 7 years. my answer=p(x)=price of truck ($) p(x)=29000(.88)^x value of ...

*March 29, 2007 by Fidelia*

**Physics**

A 500 kg car experiences a frictional force of 3208 N while turning, if the car is traveling around a turn of radius 16 m what is the velocity of the car?

*January 15, 2015 by Brooke*

**Physics**

A 500 kg car experiences a frictional force of 3080 N while turning, if the car is traveling around a turn of radius 17 m what is the velocity of the car?

*January 20, 2015 by Brooke*

**physics**

Car a with a mass of 1250kg is travelling at 30m/s to the east. Car b is a truck with a mass of 2000kg, travelling to the west at 25m/s. Assume these two vehicles experienc an inelastic collision but do not stick together and car a goes off 10m/s to the west what will be the ...

*October 3, 2013 by David*

**Dynamics**

During a high-speed chase, a 2400-lb sports car traveling at a speed of 100 mi/h just loses contact with the road as it reaches the crest A of a hill. a) Determine the radius of curvature r of the vertical profile of the road at A. b) Using the value of r found in a part a), ...

*March 24, 2011 by Sarah*

**Algebra**

A car is traveling at an average speed of 54 miles per hours. How many minutes will it take the car to travel 117 miles

*May 8, 2014 by Anonymous*

**physics**

A speeder traveling at a constant speed of 125km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (8.0km/h)/s until it reaches its maximum speed of 190km/h, which it maintains until it catches up with the speeder. (a) How long does it take...

*August 27, 2013 by alex*

**algebra**

If Jenny's car uses less gas per mile driven than Sandra's truck, how does the graph representing the rate of change of Sandra's truck compare to the graph representing the rate of change of Jenny's car?

*June 16, 2013 by q*

**Physics**

A truck tractor pulls two trailers, one behind the other, at a constant speed of 100 km/h. It takes 0.640 s for the big rig to completely pass onto a bridge 390 m long. For what duration of time is all or part of the truck-trailer combination on the bridge?

*September 3, 2012 by Joli*

**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

*October 9, 2013 by Anonymous*

**Physics**

The mass of a sports car is 1200 kg. The shape of the car is such that the aerodynamic drag coefficient is 0.250 and the frontal area is 2.30 m2. Neglecting all other sources of friction, calculate the initial acceleration of the car ,if it has been traveling at 80 km/h and is...

*February 24, 2011 by Jamie*

**Physics**

The mass of a sports car is 1200 kg. The shape of the car is such that the aerodynamic drag coefficient is 0.250 and the frontal area is 2.30 m2. Neglecting all other sources of friction, calculate the initial acceleration of the car ,if it has been traveling at 85 km/h and is...

*October 9, 2014 by Alex*

**physics(Quick!)**

if a car accelerates from rest at a constant 5.5 m/s^2, how long will it take for the car to reach a velocity of 28 m/s

*October 13, 2011 by ...*

**Mathematics**

A car X left town A for town B at the same time that another car Y left town B for town A, each travelling at constant speed. They met 80 minutes later and car X arrived at town B 36 minutes after car Y reached town A. How long did it take car X to reach town B?

*July 9, 2015 by Henry*

**math**

if car one is traveling at 45miles per hr in one direction. How fast is car no 2 has to go from stoped state to catch up with car one after 15 miles assuming car 2 can go from 0-60 in 5 sec.

*November 12, 2012 by gus*

**Science**

A car weighing 24,500 Newtons is traveling east and travels a distance of 100 meters in 20 seconds. What is the car's mass? What is the car's kinetic energy?

*April 12, 2013 by Lele Reynolds*

**Physics - drwls?**

A 2000 kg truck traveling north at 38 km/hr turns east and accelerates to 55 km/hr. What is the change in the truck's kinetic energy? What is the magnitude of the change in the linear momentum of the truck? What is the direction of the change in linear momentum of the truck? (...

*March 19, 2007 by winterWX*

**physics**

A car traveling 50 m/s has tires tires that with radii of 0.25 m. The driver of the car hits the brakes and brings the car to a stop in 5 seconds. What is the angular acceleration of the tires on the car?

*April 25, 2011 by bejay*

**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*

**Physics**

You are testing a car on the Nevada salt flats traveling 85 m/s. Your parachute deploys and you decelerate at 13 m/s^2. How long does it take to come to a complete stop?

*September 22, 2016 by Kay*

**Algebra**

Evan washes two types of vehicles. It takes him 30 minutes to wash a car and 40 minutes to wash a truck. He charges $12 to wash a car and $15 to wash a truck. In 270 minutes, Evan made $105 washing cars and trucks. How many trucks did Evan wash?

*July 4, 2014 by alex*

**algebra 2-1**

Evan washes two types of vehicles. It takes him 30 minutes to wash a car and 40 minutes to wash a truck. He charges $12 to wash a car and $15 to wash a truck. In 270 minutes, Evan made $105 washing cars and trucks. How many trucks did Evan wash?

*July 6, 2016 by noni*

**Physics**

An unmarked police car traveling a constant 90 km/h is passed by a speeder traveling 128 km/h. Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 2.80 m/s2 , how much time passes after the police car is ...

*September 6, 2015 by Anonymous*

**physics**

A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 45.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 3.00 m/s^2. Including the reaction time, how long ...

*September 6, 2012 by colby*

**physics**

A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 44.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 5.00 m/s^2. Including the reaction time, how long ...

*June 18, 2013 by louis aaaa*

**Physics**

A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 40.0 m/s due north. After a reaction time 0.500 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the reaction time, how long ...

*September 10, 2013 by Kaitlyne*

**physics**

A police car is traveling at a velocity of 19.0 m/s due north, when a car zooms by at a constant velocity of 49.0 m/s due north. After a reaction time 0.600 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the reaction time, how long ...

*September 15, 2013 by Katy*