Wednesday

April 16, 2014

April 16, 2014

Number of results: 45,933

**physics**

Jane and John, with masses of 54kg and 63kg , respectively, stand on a frictionless surface 11m apart. John pulls on a rope that connects him to Jane, giving Jane an acceleration of 0.82m/s2 toward him. Part A What is the magnitude of the John's acceleration?
*Thursday, September 26, 2013 at 3:18pm by Joe*

**Physics**

1.During a tennis serve,the top of the raquet,which is 15m from its pivot point,accelerats from rest to a speed of 10m/s in a time of 0.10s.Calculate the average tangential acceleration and the top of the racquet and also its angular acceleration. Tangential acceleration = ...
*Tuesday, November 14, 2006 at 6:24am by miss sixty*

**Physics**

easy anwer. You are looking for in the end speed, but to get there, you start with distance on each side. So XXXXN*2.5 is the distance (2.5 is the time, distance=speed*time) It could have been done your way.. 1000N/2.5 (speed)= speed wind+ speed plane My way was.. 1000N (...
*Wednesday, October 26, 2011 at 11:30am by bobpursley*

**physics**

You are driving your car over a circular-shaped bump in the road that has a radius of curvature of 75.9 m. A)If the car is traveling at a constant speed of 18.3 m/s, calculate the apparent weight of your 56.1 kg passenger as you pass over the top of the bump. B)What is the ...
*Saturday, February 22, 2014 at 1:00pm by Tammie*

**Physics Classical Mechanics**

thnks, yeah i got it wrong too. i think that by top view means that its a disk and you are looking at it from the top. so you just have to do the torque torque= F*d=I*alpha so alpha = F*d/I d= distance between the point of aplication of the force and the point of rotation
*Saturday, December 7, 2013 at 12:47pm by jennifer*

**algebra**

nope I am positive it is the way I have it written. This problem has caused me more grief because I thought there should have been a "x" in it also. Thanks for looking at it for me.
*Saturday, October 6, 2007 at 11:13am by Jane*

**algebra**

the length of the top of a table is 6 m greater than the width. the area is 91m^2. Find the dimensions of the table.
*Sunday, December 19, 2010 at 10:51am by jane*

**physics**

You are driving your car over a circular-shaped bump in the road that has a radius of curvature of 75.9 m. A)If the car is traveling at a constant speed of 18.3 m/s, calculate the apparent weight of your 56.1 kg passenger as you pass over the top of the bump. B)What is the ...
*Saturday, February 22, 2014 at 11:17am by name 23*

**jane**

You have correctly calculated the tangential speed of V=9.425m/s (=2pi*r/T)
*Tuesday, June 2, 2009 at 10:08pm by MathMate*

**physics**

You’re standing outside on a windless day when raindrops begin to fall straight down. You run for shelter at a speed of 5.2 , and you notice while you’re running that the raindrops appear to be falling at an angle of about 30 from the vertical.What’s the vertical speed of the ...
*Friday, October 19, 2012 at 7:03pm by Anonymous*

**Physics**

You throw a ball straight into the air from a height of 4 feet and with a speed of 8.22 m/s. The moment the ball leaves your hand you start running away at a speed of 3.36 m/s. How far are you from the ball, the moment it hits the ground? (what are the formulas used?)
*Monday, February 3, 2014 at 4:32pm by Mel*

**Physics ~Conservation of Energy~ part 2**

1.) A 500 kg roller coaster is pulled to the top of a hill 45 m high and arrives at the top with a zero speed. a) how much work has done by the vhain to pull the car to the top? b) how much potential energy does it have at the top? c)What is the total energy of the system? d) ...
*Wednesday, January 30, 2013 at 6:12pm by Isis*

**Physics HELP!!!!!!!!**

For the normal force in Figure 5.21 to have the same magnitude at all points on the vertical track, the stunt driver must adjust the speed to be different at different points. Suppose, for example, that the track has a radius of 3.1 m and that the driver goes past point 1 at ...
*Wednesday, February 21, 2007 at 1:03pm by Mary*

**Physics**

A 570.0 g ball moves in a vertical circle on a 103.0 cm-long string. If the speed at the top is 4.30 m/s, then the speed at the bottom will be 10.65 m/s. (you'll learn how to show this Chapter 10.) What is the gravitational force (in N) acting on the ball? What is the tension ...
*Monday, October 17, 2011 at 7:55pm by :(*

**Math**

Ted and Ben took part in the same race. When Ted finnished the race in 25 min., Ben had only run 5/8 of the distance. Ben's average speed was 75m/min SLOWER than Ted's. What is Ted's average running speed? Speed=Ditance/time
*Wednesday, December 3, 2008 at 5:06am by Mary*

**Physics**

use the initial speed to find the vertical initial speed. Then at the top, it has zero vertical velocity vfv^2 = viv^2-2*9.8*height 0=viv^2-2*9.8*h solve for h. time in air? twice the time it takes to go to the top. vfv=0=viv*t-4.9t^2 solve for t, double it.
*Friday, November 1, 2013 at 9:41am by bobpursley*

**physics**

A projectile is fired at an upward angle of 45 degrees from the top of a 265 m cliff with a speed of 350 m/s. What will be it's speed when it strikes the ground below?
*Tuesday, October 26, 2010 at 10:29am by jessica*

**physics**

You’re standing outside on a windless day when raindrops begin to fall straight down. You run for shelter at a speed of 5.3 , and you notice while you’re running that the raindrops appear to be falling at an angle of about 30 from the vertical. What’s the vertical speed of the...
*Wednesday, October 12, 2011 at 3:00am by jes dores*

**physics**

You have a 15.0 kg block of wood and you drop it from rest at a great height. It reaches terminal velocity of 31.3 m/s. If this is low-speed drag, what is the value of the constant b? If this is a high-speed drag, what is the value of the constant c?
*Saturday, March 17, 2012 at 7:05pm by jane*

**Physics**

An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 10.9 m/s in 3.70 s. (a) What is the magnitude and direction of the bird’s acceleration? (b) Assuming that the acceleration remains the same, what is the bird’s ...
*Monday, September 2, 2013 at 2:25pm by Brianna*

**Math**

dm= distanance maria dj=distance jane 84=dm+dj dm=(speedjane+8)3/4 dj= speedjane*3/4 84=3/4(speedjane+8)+3/4speedjane solve for speed jane first. Maria adds 8
*Tuesday, February 19, 2013 at 8:43am by bobpursley*

**physics**

A gun is mounted at the top of light house of height h. A similar gun is mounted in the boat in the sea. Both the guns can fire shots with speed upto under root 2gk, where k>h. What will be the area in which gun at the top can be gun in the boat, but gun in the boat cannot ...
*Tuesday, July 26, 2011 at 11:30am by Tillu*

**physics**

You’re standing outside on a windless day when raindrops begin to fall straight down. You run for shelter at a speed of 5.3 m/s , and you notice while you’re running that the raindrops appear to be falling at an angle of about 30 degrees from the vertical. What’s the vertical ...
*Wednesday, October 12, 2011 at 9:46pm by jes dores*

**Science**

A bus makes a 10 mile journey throuh town. Its top speed is 30mph and its mean speed its mph. Explain why these speeds are different?
*Tuesday, September 21, 2010 at 4:14pm by Lucy*

**Algebra**

Itcwas a vine can
*Tuesday, September 17, 2013 at 7:41pm by Trey*

**Business Statistics**

John & Jane are married. The probability that John watches a certain television show is .4. The probability that Jane watches the show is .5. The probability that John watches the show, given that Jane does, is .7. 1) find probability that both John & Jane watch the show. 2) ...
*Tuesday, June 21, 2011 at 12:15am by CC*

**Physics**

A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of 15 m. Assume the friction and the air ...
*Thursday, October 25, 2012 at 8:04pm by Sara*

**Physics**

A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of 15 m. Assume the friction and the air ...
*Friday, October 26, 2012 at 7:43am by Sara*

**Physics**

A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of 15 m. Assume the friction and the air ...
*Saturday, October 27, 2012 at 4:44pm by Sara*

**physics**

a race car completes 10 laps around an oval track. which of the following pairs of quantities concerning its motion would both have values of zero? a)displacement, avg velocity B)avg speed, avg acceleration c)distance, avg speed d)avg speed, avg velocity e) displacement, avg ...
*Monday, September 14, 2009 at 8:29pm by kaaay*

**physics**

An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 9.80 m/s in 3.10 s. (a) What is the magnitude and direction of the bird’s acceleration? (b) Assuming that the acceleration remains the same, what is the bird’s ...
*Sunday, June 16, 2013 at 10:24pm by louis aaaaa*

**Science**

An escalator is moving downward with a uniform speed of u. A man of mass m is running upward on it at a uniform speed of v. If the height of the escalator is h, the work done by the man in going up the escalator is?
*Thursday, December 8, 2011 at 2:42pm by Dawn*

**Science**

If you were to move the load by applying force from the top, what kind of machine might be the most appropriate to lift the load 5 cm?
*Monday, March 21, 2011 at 12:39am by Jane*

**alegbra 1**

top and bottom margins are 7/8 inch there are 5 rows of pictures with 3/16 inch between the vertical what would be the height of each picture
*Monday, October 22, 2012 at 10:36am by jane*

**Physics**

A man jogs at a speed of 1.7 m/s. His dog waits 2.5 s and then takes oﬀ running at a speed of 4.1 m/s to catch the man. How far will they have each traveled when the dog catches up with the man? help me set up the equations please!
*Friday, August 24, 2012 at 10:40pm by Daisy*

**phyics**

Richard is driving home to visit his parents. 125 of the trip are on the interstate highway where the speed limit is 65 . Normally Richard drives at the speed limit, but today he is running late and decides to take his chances by driving at 72 . how do i get to my answer
*Tuesday, September 11, 2012 at 1:36pm by tamika*

**physics**

what is the kinetic energy of a bear with a mass of 65 Kg and running at a speed of 20 m/s ?
*Thursday, March 3, 2011 at 7:38pm by moxxi*

**Science**

What is the kinetic energy of a 28 kg dog that is running at a speed of 7.0 m\s(about 16mi\h)?
*Thursday, June 2, 2011 at 12:16pm by Ann*

**physics**

A car and a motorbike both are running at the same speed. Which of the two has greater momentum and why?
*Wednesday, August 10, 2011 at 10:41am by Diya*

**Physics**

From the top of a tower is an object with mass 25 kg which is lowered with ropes at a constant speed, 4 m / s to the ground. After 10 seconds the rope by which an object falls freely. From the moment there are 12 seconds to those standing on top of the tower hears the sound of...
*Tuesday, October 19, 2010 at 2:20am by Oddbjørn*

**Mechanics (M1) A level?**

A block moves on a rough slope of length 10 m inclined at 30 degrees to the horizontal. The coefficiebt of friction between the block and the slope is 0.4. The block starts from rest at the top of the slope. a) Find the speed at which the block reaches the bottom of the slope...
*Sunday, April 29, 2012 at 3:32pm by Jat*

**Physics**

If an object is thrown in an upward direction from the top of a building 160 ft high at an initial speed of 30 mi/h, what is its final speed when it hits the ground?
*Monday, June 17, 2013 at 10:01am by Isis*

**Physics HS**

Doing a physics lab on elastic material - Asked to list at least three sources of error in measurments and/or laboratory technique. I really do not understand what teacher is looking for?
*Wednesday, October 17, 2007 at 9:22pm by Jane*

**@elena**

You helped me with this question earlier today, the answer you got was incorrect, i tried looking through your calculations but i cant find the mistake. the program wont let me see the right answer just tells the answer i put in was wrong. can you please look over it again ...
*Sunday, April 22, 2012 at 4:26pm by JOEY*

**physics**

a tourist being chased by an angry bear is running in a straight line toward his car at a speed of 4.0m/s. the car is a distance d away the bear is 26m behind the tourist and running at 6.0m/s. the tourist reaches the car safely what is the maximum possible value for d? i got ...
*Monday, September 24, 2007 at 11:51pm by ajo*

**Physics**

Richard is driving home to visit his parents. 125 of the trip are on the interstate highway where the speed limit is 65 . Normally Richard drives at the speed limit, but today he is running late and decides to take his chances by driving at 70. How many min does she save?
*Thursday, September 16, 2010 at 9:55am by Danny*

**Physics**

While running, a person dissipates about 0.6 J of mechanical energy per step per kilogram of body mass. If a 60-kg person runs with a power of 70 Watts during a race, how fast is the person running? Assume a running step is 1.5 m long.
*Friday, July 9, 2010 at 8:43am by Deanna*

**Econ MC**

Dick owns a dog whose barking annoys Dick's neighbor Jane. Suppose that the benefit of owning the dog is worth $700 to Dick and that Jane bears a cost of $500 from the barking. Assuming Dick has the legal right to keep the dog, a possible private solution to this problem is ...
*Thursday, March 22, 2007 at 7:02pm by Econ*

**Science**

You might find some of these: http://search.yahoo.com/search?fr=mcafee&p=the+kinetic+energy+of+a+28+kg+dog+that+is+running+at+a+speed+of+7.0+m\s%28about+16mi\h%29%3F+ Sra
*Thursday, June 2, 2011 at 12:16pm by SraJMcGin*

**Physics**

From the edge of the rooftop of a building, a boy throws a stone at an angle 24.0° above the horizontal. The stone hits the ground 4.40 s later, 104 m away from the base of the building. (Ignore air resistance.) Find the initial velocity of the stone and magnitude and ...
*Thursday, February 11, 2010 at 4:06pm by Damon*

**English**

"Looking at the picture on the left, let's play the guessing game. I have some pictures. Look at this picture. What is he doing? Guess what he is doing and say something like this: He is running." The rest looks fine.
*Monday, June 9, 2008 at 6:57am by Writeacher*

**Physics HELP!**

At what minimum speed must a roller coaster be traveling when upside down at the top of a circle if the passengers are not to fall out? I'm having trouble understanding what it means by minimum speed. I know that at the top there are two forces, the force of gravity and the ...
*Saturday, December 25, 2010 at 12:33am by James*

**physics**

You are pulling your sister on a sled to the top of a 20.0 m high, frictionless hill with a 10.0° incline. Your sister and the sled have a total mass of 50.0 kg. You pull the sled, starting from rest, with a constant force of 127 N at an angle of 45.0° to the hill. If you pull...
*Thursday, March 17, 2011 at 5:26pm by sabeen*

**Physics 111**

While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 62 kg person develops a power of 67 W during a race, how fast is the person running? (Assume a running step is 1.5 m long.)
*Thursday, October 14, 2010 at 12:42am by Blake *

**physics**

The cost of gasoline per hour for running a certain car is directly proportional to the square of the speed. I f the cost is $2.40 per hour for a speed of 40 km/h, what is the cost per hour for a speed of 60 km/h?
*Tuesday, November 22, 2011 at 4:18pm by Anonymous*

**Physics (Circular Motion!!)**

A) Top angular speed is wmax = 2 pi radians/1.1 s = 5.71 rad/s Angular acceleration during first 30 s: alpha = 5.71/30 = 0.1904 rad/s^2 Tangential acceleration = R*alpha = 0.952 m/s^2 B) centripetal acceleration at top speed = R*wmax^2 = 163 m/s^2 = 16.6 g's
*Thursday, September 2, 2010 at 12:52pm by drwls*

**Physics**

A projectile is fired at an upward angle of 25.0^\circ from the top of a 310 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
*Monday, November 15, 2010 at 11:57pm by Linda*

**physics**

A sprinter can accelerate with constant acceleration for 2.10s before reaching top speed. He can run the 100-meter dash in 10 s. What is his speed as he crosses the finish line?
*Friday, September 13, 2013 at 3:04pm by Kala*

**physics**

What is the kinetic energy of a 26 kg dog that is running at a speed of 8.4 m/s (about 19 mi/h)?
*Friday, September 3, 2010 at 6:05pm by ashley*

**physics**

What is the kinetic energy of a 20 kg dog that is running at a speed of 7.3 m/s (about 16 mi/h)?
*Thursday, January 27, 2011 at 6:01pm by Shay*

**science**

What is the kinetic energy of a 14 kg dog that is running at a speed of 9.0 m/s (about 20 mi/h)
*Thursday, February 10, 2011 at 10:09pm by Renee*

**physical science**

What is the kinetic energy of a 27 kg dog that is running at a speed of 8.3 m/s (about 19 mi/h
*Tuesday, May 31, 2011 at 5:33pm by t*

**physics**

What is the kinetic energy of a 29 kg dog that is running at a speed of 7.9 m/s (about 18 mi/h)?
*Thursday, July 14, 2011 at 1:09pm by chanelle*

**physics**

What is the kinetic energy of a 15 kg dog that is running at a speed of 8.9 m/s (about 20 mi/h)?
*Saturday, September 24, 2011 at 7:31pm by Anonymous*

**science**

What is the kinetic energy of a 23 kg dog that is running at a speed of 7.4 m/s (about 17 mi/h)?
*Saturday, February 4, 2012 at 2:06pm by vanessa*

**Math**

You are looking for numbers between 30 and 50 These numbers must be in the 40s. Which number in the 40s has a 6? Would it be 46?
*Tuesday, March 12, 2013 at 6:19pm by Dr. Jane*

**science**

A child's top is held in place, upright on a frictionless surface. The axle has a radius of r= 2.21 mm. Two strings are wrapped around the axle, and the top is set spinning by applying T= 2.40 N of constant tension to each string. If it takes 0.830 s for the string to unwind. ...
*Saturday, October 26, 2013 at 10:57pm by wafaa*

**physics**

A child's top is held in place, upright on a frictionless surface. The axle has a radius of r= 2.21 mm. Two strings are wrapped around the axle, and the top is set spinning by applying T= 2.40 N of constant tension to each string. If it takes 0.830 s for the string to unwind. ...
*Sunday, October 27, 2013 at 7:31pm by wafaa*

**physics**

A child's top is held in place, upright on a frictionless surface. The axle has a radius of r= 2.21 mm. Two strings are wrapped around the axle, and the top is set spinning by applying T= 2.40 N of constant tension to each string. If it takes 0.830 s for the string to unwind. ...
*Sunday, October 27, 2013 at 7:31pm by wafaa*

**physics**

The blades of a fan running at low speed turn at 200 rpm. When the fan is switched to high speed, the rotation rate increases uniformly to 340 rpm in 5.92 s. How many revolutions do the blades go through while the fan is accelerating?
*Saturday, December 11, 2010 at 9:47pm by Kelsey*

**Physics**

A roller coaster car of mass 1000kg is riding along a track from point A to point C. (point A is 75m high, B is 50m high and C is 100m high, so that there are a total of three hills.) the final velocity at point C is 10m/s a) Assume no friction what is the speed of the car at ...
*Wednesday, November 14, 2007 at 8:02pm by Tammy*

**Physics/Science #3**

A ball is thrown vertically downward from the top of a 35.9-m tall building. The ball then passes the top of a window that is 10.7 m above the ground 2.00 s after being thrown. What is the speed of the ball as it passes the top of the window? The equation for the speed of the ...
*Thursday, January 25, 2007 at 4:14pm by TechnoBoi11*

**English**

it is the chapter1 of Tarzan the terrible author -- Edgar Rice Burroughs
*Wednesday, July 7, 2010 at 11:59pm by Rainbow*

**English**

it is the chapter1 of Tarzan the terrible author -- Edgar Rice Burroughs
*Wednesday, July 7, 2010 at 11:54pm by Rainbow*

**English**

it is the chapter1 of Tarzan the terrible author -- Edgar Rice Burroughs
*Wednesday, July 7, 2010 at 11:47pm by Rainbow*

**English**

it is the chapter1 of Tarzan the terrible author -- Edgar Rice Burroughs
*Wednesday, July 7, 2010 at 11:31pm by Rainbow*

**Pre-calc**

solve 3sin^2(x)=5sin(x)+2 (0≤x<π)
*Tuesday, May 15, 2012 at 2:07pm by Tarzan *

**physics**

Explain why the occupants in a running car observe objects on the roadside as though they are running backwards.
*Thursday, January 27, 2011 at 3:30am by Kate*

**Microeconomic**

If your marginal utility from your last session with your personal trainer is equal to the price she charged you, then: Thank you-Jane
*Friday, March 11, 2011 at 7:48pm by Jane*

**Science**

If a yo yo has a speed of 3 m/s at the top of the circle, whose radius is 80 cm, What is its speed at the bottom
*Friday, September 21, 2012 at 10:25am by Andtrew*

**scientist**

suppose a polar bear running with an initial speed of 4.0 m/s accelerates uniformly for 18s. what is the bear's maximum speed if the bear travels 135m during the 18s of acceleration? Give the answer in both meters per second and kilometers per hour.
*Wednesday, September 16, 2009 at 5:17pm by NoNo100*

**Differential Equations**

A rabbit starts at the origin and runs up the right branch of the parabola y=x^2 with speed a. At the same time a dog, running with speed b, starts at the point (c,0) and pursues the rabbit. Write a differential equation for the path of the dog
*Thursday, January 26, 2012 at 7:41pm by Samantha*

**Physics**

A football is kicked off with an initial speed of 63 ft/s at a projection angle of 45 degrees. A receiver on the goal line 67 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in feet/second) if he is to catch...
*Tuesday, October 1, 2013 at 3:48pm by 0tter*

**Physics**

When the vine is vertical, the tension equals M g + M V^2/R
*Tuesday, March 2, 2010 at 11:11pm by drwls*

**math**

The mean time for running a mile is 450 se4conds with a standard deviation of 40 seconds. What time would you need to beat to be in the top 10%?
*Saturday, April 23, 2011 at 5:36pm by Sue*

**Pre-Algebra**

I think at the prealgebra level, your teacher would be looking for positive. As height increases, weight increases which is a positive relationship.
*Monday, March 4, 2013 at 10:38am by Dr. Jane*

**College Physics**

A projectile is fired at an upward angle of 55.0 degrees from the top of a 230m cliff with a speed of 180m/s.What will be its speed when it strikes the ground below? (Use conservation of energy.)
*Thursday, February 25, 2010 at 11:03pm by Sandy*

**Business Law**

Joe an Idaho resident was driving in Tenn. and struck Jane, a Tenn. resident. Which is true? 1. Jane can sue Joe in Tenn. federal court if her damages are greater than $75,000. 2. Jane can't see Joe in Tenn federal court because Joe isn't a resident. 3. Jane may sue Joe in ...
*Sunday, January 20, 2013 at 3:14pm by Rald*

**Physics**

horizontal speed = u = 22 cos 63 the whole time Vi = 22 sin 63 at top v = 0 = Vi - g t where t is rise time t = Vi/9.81 average speed up = Vi/2 so top height = (Vi/2)t + 1.5 total time in air = 2 t so Sarah is u (2t) = 22 coa 63 (2t) meters from Julie
*Friday, January 31, 2014 at 6:20pm by Damon*

**physics**

how much time does it take for a student running t an average speed or 5.00m/s to cover a distance of 2.00km?
*Friday, October 17, 2008 at 12:03pm by Michelle*

**physics**

What is the kinetic energy of a 19 kg dog that is running at a speed of 7.4 m/s (about 17 mi/h)?
*Tuesday, August 31, 2010 at 6:18pm by jessie mcgee*

**physical science**

What is the kinetic energy of a 29 kg dog that is running at a speed of 8.8 m/s (about 20 mi/h)?
*Sunday, September 9, 2012 at 2:37pm by Liz*

**college physics**

What is the kinetic energy of a 25 kg dog that is running at a speed of 8.9 m/s (about 20 mi/h)?
*Wednesday, September 19, 2012 at 10:43am by Ashley*

**English- Jane Eyre**

We have to complete a study guide for English class but for some reason I can't find any of the answers, can anyone help? Chapter 5: According to the girl Jane meets, why is Lowood called an institution? How has Miss Scatcherd punished the girl Jane has spoken to? Chapter 6: ...
*Monday, January 28, 2008 at 8:45am by sammy*

**Physics**

A railroad car moves under a grain elevator at a constant speed of 4.10 m/s. Grain drops into the car at the rate of 660 kg/min. What is the magnitude of the force needed to keep the car moving at constant speed if friction is negligible? ________ N
*Wednesday, November 18, 2009 at 12:30pm by Jane**

**Physics**

u = horizontal velocity = 5.7 cos 58 = 3.02 m/s forever Vi = initial speed up = 5.7 sin 58 = 4.83 m/s v = Vi - 9.8 t at top, v = o 0 = 4.83 - 9.8 t t = .493 s at top h = 1.3 + Vi t - 4.9 t^2 t at top is .493 so h at top = 1.3 + 4.83(.493)-4.9(.493)^2 = 2.49 meters above ground...
*Friday, February 21, 2014 at 6:59pm by Damon*

**Math pizzazz worksheet answers**

Sarah-U.C.L.A WHAT GAME DID TARZAN LIKE TO PLAY?
*Sunday, March 8, 2009 at 4:38pm by SexyANDiKnowIT*

**Physics**

The speed limit on a particular freeway is 28.0 m/s (about 101 km/hour). A car that is merging onto the freeway is capable of accelerating at 5.50 m/s2. If the car is currently traveling forward at 13.0 m/s, what is the shortest amount of time it could take the vehicle to ...
*Monday, September 19, 2011 at 8:21pm by Jane *

**physics**

An elevator is stopped at the ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a constant speed for 35 seconds. Finally, it slows down with an acceleration of the same magnitude (but opposite direction) −a , until it ...
*Saturday, October 5, 2013 at 3:32pm by kyle*

**physics**

An elevator is stopped at the ground floor. It starts moving upwards at constant acceleration a>0 for 5 seconds. It then keeps a constant speed for 35 seconds. Finally, it slows down with an acceleration of the same magnitude (but opposite direction) −a , until it ...
*Saturday, October 5, 2013 at 7:47pm by HELP!*

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