Wednesday

April 16, 2014

April 16, 2014

Number of results: 236,514

**applied math - more info**

which speed? rotation speed, orbital speed, speed of a falling body?
*Tuesday, March 13, 2012 at 3:55am by Anonymous*

**college math**

v = boat speed speed downstream = (v + 6) speed upstream = (v-6) time = distance/speed 160/(v+6) = 96/(v-6) 10/(v+6) = 6/(v-6) 5/(v+6) = 3/(v-6) 3(v+6) = 5(v-6) 3 v + 18 = 5 v - 30 2 v = 48 v = 24 mph
*Friday, March 9, 2012 at 4:57pm by Damon*

**Math**

Their speed downstream = 21/3 = 7mph Their speed upstream = 21/7 = 3mph So, the river speed is (7-3)/2 = 2mph Their rowing speed is 5mph.
*Wednesday, October 26, 2011 at 9:52pm by Steve*

**math**

That depends upon the speed of the car it hits. The relative impact speed in a rear-end collision (or "rate" as you call it) is the speed of the car behind MINUS the speed of the car in front.
*Monday, October 22, 2007 at 2:21pm by drwls*

**Math**

His initial speed was 68mph. Using Distance = Rate * Time, we get: Let r = speed for 6 hours, r-20 = speed for 5 hours, so: 648 = 6r + 5*(r - 20). Hope this wasn't in Wi because the max legal speed limit is 65mph!
*Wednesday, March 27, 2013 at 11:56pm by Wayne*

**math 116**

The downstream speed with respect to land is V+6 and the upstream speed is V-6, where V is the speed in still water. Let the distance be D D/(V+6) = 4 hrs D/(V-6) = 5 4(V+6) = 5(V-6) V = 54 mph
*Tuesday, March 3, 2009 at 7:56pm by drwls*

**math**

Application Giovanni is flying his Cessna airplane on a heading as shown. His instrument panel shows an air speed of 130 mi/h. (Air speed is the speed in still air without wind.) However, there is a 20 mi/h crosswind. What is the resulting speed of the plane?
*Friday, March 8, 2013 at 6:05pm by x*

**math**

Application Giovanni is flying his Cessna airplane on a heading as shown. His instrument panel shows an air speed of 130 mi/h. (Air speed is the speed in still air without wind.) However, there is a 20 mi/h crosswind. What is the resulting speed of the plane?
*Saturday, March 9, 2013 at 5:21am by y*

**Math**

Speed = distance / time 20 minutes = 20/60 = 1/3 hr Speed = 40 miles / (1/3) hr Speed = 120 mp/h Hence, his average speed returned home is 120 mile per hour.
*Monday, July 25, 2011 at 12:03am by Mithra*

**math**

recall that speed or rate is distance traveled over time, or: speed, v = d/t thus, you compare Anna's speed and Julia's speed: Anna: v = 20/(1 1/3) Julia: v = 246/(16) *note: first convert mixed number to improper fraction before dividing. hope this helps. :)
*Friday, October 29, 2010 at 2:15am by jai*

**math**

let spped of current be X, when the boat goes upstream, the actual speed of boat= speed of boat-speed of current;when the boat goes downstream, the speed =speed of boat+speed of current distance=speed x time upstream: (16-X)x 1/3 downstream:(16+X)x1/4 since the total distance ...
*Wednesday, September 3, 2008 at 9:34pm by ZZ*

**math**

w=speed of wind a=speed of airplane Use speed*time = distance (a-w)*(10/3)=960 ...(1) (a+2)*(5/2)=960 ...(2) Solve for a and w.
*Wednesday, September 22, 2010 at 9:47pm by MathMate*

**Math**

if boat speed = b, and river speed = r, then since speed = distance/time, b+r = 12/1.5 = 8 (downstream) b-r = 12/6 = 2 (upstream) b=5,r=3
*Sunday, March 10, 2013 at 10:13pm by Steve*

**math**

A motorist travelling at a steady speed of 120km/h covers a section of the highway in 30min. After a speed limit is imposed he finds that when travelling at the maximum speed allowed he takes 20 min. longer than before to cover the same section. Calculate the speed limit.
*Friday, November 30, 2012 at 12:54am by Lindsay*

**math**

Set-up: Let v=speed of boat c=speed of current Distance = speed*time Upstream: 120=(v-c)*20 ...(1) Downstream: 120=(v+c)*10 ...(2) Solve for v and c.
*Wednesday, August 1, 2012 at 6:32pm by MathMate*

**math**

A boat travels 8km upstream and back in 2 hours. If the current flows at a constant speed of 3km/h, Find the speed of the boat in still water.(when the boat goes upstream, it speed reduces by 3km/h, and when going downstream, its speed increases by 3 km/h)
*Tuesday, January 15, 2013 at 5:48am by zshen*

**MATH Algebra**

The speed of a passenger train is 6 mph faster than the speed of a freight train. The passenger train travels 280 miles in the same time it takes the freight train to travel 250 miles. Find the speed of each train. What is the speed of passenger train? ____mph What is the ...
*Friday, August 7, 2009 at 10:16pm by Anonymous*

**Math**

The Danville Epress travels 280mi at a certain speed.If the speed had been increased by 5mph the trip could have been made in 1 hour less time.Find the actual speed.
*Tuesday, February 15, 2011 at 7:29pm by Nicole*

**math**

The Danville Epress travels 280mi at a certain speed.If the speed had been increased by 5mph the trip could have been made in 1 hour less time.Find the actual speed.
*Tuesday, February 15, 2011 at 10:31pm by Nicole*

**math**

The train slows down uniformly from a speed of 50m/s to a speed of 10m/s in a time of 20sec,During the next 30sec,it accelerates uniformly to a speed of u metres/sec.calculate the retardation from t=0 to t=20?
*Friday, May 3, 2013 at 10:21am by Meggy lep*

**Math**

angular speed=angle/time convert 220 degrees to radians.. Angle=220/360 ( 2PI) solve for angular speed. linear speed=angular speed* (3959+220)
*Sunday, October 21, 2012 at 5:22pm by bobpursley*

**english**

In the following paragraph, are the words I have in capital letters adverbs? A five-speed bike combines the WORST of a three-speed and ten-speed. The typical five-speed is built on the same heavy frame as the three-speed, OFTEN, has the five-speed gear cluster and changer ...
*Wednesday, September 17, 2008 at 11:26pm by Tracy*

**10th grade Academic Math**

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.
*Monday, June 7, 2010 at 6:41pm by Neil*

**10th grade Academic Math**

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.
*Monday, June 7, 2010 at 7:19pm by Neil*

**10th grade Academic Math**

hi can you help me with this problem please, thank you.----------------- If the speed of an experimental car is decreased by 8km/h it completes a 140 km trip in 2 hours more than had it been traveling at its usual speed. Determine its usual speed.
*Monday, June 7, 2010 at 7:29pm by Neil*

**physics**

A runner, beginning at rest, completed a 50 m run with a final speed of 6 m/s. Assuming constant acceleration. a) What was the average speed of the runner? b) What was the runner's time? c) What was the acceleration? a) half the final speed b) distance/(average speed) c) (...
*Monday, October 2, 2006 at 11:04pm by maria*

**Calculus(Pre)**

linear speed is speed along a given path, normally a straight line. angular speed is some changing angle that changes as a function of time. The change in angle per unit time is angular speed. For instance, if a car wheel makes a complete rotation in 10 seconds, its angular ...
*Thursday, November 17, 2011 at 4:43pm by bobpursley*

**Math**

An aircraft flew 3hrs with the wind. The return trip took 4hrs against the wind. If the speed of the plane in still air is 180mph more than the speed of the wind, find the wind speed and the speed of the plane in still air.
*Tuesday, September 27, 2011 at 11:34pm by Ingrid*

**Math**

Let x = speed of A and x + 80 = speed of B. Speed = distance/time. therefore Distance = speed * time Distance traveled by A + distance traveled by B = 3200 This should help you solve your problem. Thanks for asking.
*Tuesday, October 16, 2007 at 8:47pm by PsyDAG*

**physics**

average speed = 400/20 = 20 m/s^2 constant acceleration (v = a t + starting speed) so begin speed is 0 and end speed is 40 m/s
*Friday, July 6, 2012 at 2:19am by Damon*

**algebra**

Assume the speed for the first trip is v and the speed for the second trip is (v - 5) Since time = distance/speed, you get: (70)/(v) + (7)/(v - 5) = 5 hrs. Solve for v to get the first speed, then subtract 5 to get the second speed.
*Friday, July 6, 2012 at 8:36am by Anonymous*

**physics**

speed = a t starting from rest speed = 360 * .05 u = speed * cos 46 v = speed * sin 46
*Sunday, September 5, 2010 at 6:25pm by Damon*

**physics**

An object moving with constant acceleration at time t=0 its speed is v. , at t=t. its speed is v./2 , at t=2t. its speed is v./4 . What will be its speed at time t=3t.?
*Tuesday, July 26, 2011 at 11:21am by Tillu*

**math**

A cyclist bikes at a constant speed for 18 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 23 miles. Find his speed.
*Monday, July 23, 2012 at 12:00am by john*

**math**

speed of boat in still water ---- x km/h speed of current ----- 2 km/h speed against current = x-2 speed with the current = x+2 time upriver = 12/(x-2) time downriver = 12/(x+2) equation: 12/(x-2) + 12/(x+2) = 2.5 hint: multiply both sides by (x+2)(x-2), simplify and you have ...
*Friday, October 15, 2010 at 11:21pm by Reiny*

**MATH**

1. speed of boat in still water --- x mph speed of current ---- y mph 10(x+y) = 210 ----> x+y = 21 70(x-y) = 210 ----> x-y = 3 add them 2x = 24 x=12 then y = 9 speed of boat = 12mph , speed of current = 9 mph #2 even easier .... define x and y as above x+y = 158 x-y = ...
*Monday, August 27, 2012 at 8:40am by Reiny*

**algebra**

the speed of train A is 8 mph slower than the speed of train B. Train A travels 220 miles in the same time it takes train B to travel 260 miles. Find the speed of both trains. Speed of train A = Speed of train B =
*Monday, November 12, 2012 at 8:44pm by pam*

**Math Ms. Sue please help**

speed of plane in still air --- x mph speed of wind ------------ y mph so going with the wind, speed = x+y against the wind, speed = x-y x+y = 158 x-y = 112 add them 2x = 270 x = 135 then 135 + y = 158 y = 23 speed of wind is 23 mph, speed of plane in still air = 135 mph
*Thursday, February 28, 2013 at 9:11pm by Reiny*

**math - incomplete**

speed increases at a rate of 1.2m/s/? If the speed increases, the value (m/s) increases by 1.2m.s every how often? acceleration is not measured as m/s. It looks to me like you should have written the acceleration is 1.2m/s^2, and you want to find how long it takes the speed to...
*Saturday, August 4, 2012 at 4:09am by Steve*

**MATH**

Well, obviously the speed of the plane must be greater than the speed of the wind, so in x-y = 112 x must be the plane's speed and y the wind's speed so sub y = 23 into x+y = 158 x+23=158 x = 155
*Monday, August 27, 2012 at 8:40am by Reiny*

**Physics**

speed*cos23*timeinair=8.4 speed= you solve it in terms of t. then vertical equation: hf=hi-4.9t^2+speed*sin23*t put what you solved for speed above into this equation, then solve for timeinair. then solve for speed.
*Wednesday, September 26, 2012 at 4:43pm by bobpursley*

**math**

let speed of boat in still water be x mph upstream: speed = x-5 time = 36/(x-5) downstream: speed = x+5 time = 54/(x+5) the two times are equal, so 36/(x-5) = 54(x+5) 54x - 270 = 36x + 180 18x = 450 x = 25 The speed of the boat without a current is 25 mph
*Tuesday, August 2, 2011 at 8:51pm by Reiny*

**Math**

I come up with 8. Toyota: 2 options: 5-speed or automatic (both with no trunk) Mazda: 2 options: 5-speed w/trunk loaded; 5-speed w/trunk empty Honda: 4 options: 5-speed w/trunk loaded 5-speed w/trunk empty automatic w/trunk loaded automatic w/trunk empty I lost you when you ...
*Wednesday, May 21, 2008 at 12:00am by drwls*

**Radians**

The angular speed of a large pulley wheel that has a radius of 15, is 50 revolutions/min. Find the angular speed and the rim speed of the smaller wheel that has a radius of 5. The rim speed is going to be the same. I got the angular speed but I can't figure out why the rim ...
*Tuesday, April 5, 2011 at 9:47pm by Jessica*

**Math**

Mattie drove 140 miles in the same amount of time that it took a tubropropeller plane to travel 520 miles. The speed of the plane was 190 mph faster than the speed of the car. Find the speed of the plane
*Thursday, March 1, 2012 at 4:39pm by Anonymous*

**physics**

Wind speed vector + Air speed vector = Ground speed vector Perform the vector subtraction. Wind speed = Ground speed - Air speed North component of wind speed = 200 sin30 -150 sin60 = ? East component of wind speed = 200 cos30 -150 cos60 = ?
*Wednesday, December 14, 2011 at 7:37pm by drwls*

**physics**

let L = wavelength, A = amplitude and w = angular frequency max particle velocity = w A wave speed = 2 pi w L ratio (part speed)/(wave speed) = A/(2 pi L) Note that the ratio is independent of wave speed, w and cord tension. It would have been necessary to know these ...
*Friday, December 24, 2010 at 10:37am by drwls*

**algebra**

2.) distance = time × speed Let rowing speed in still water be x, current in river be y Downstream, speed is his natural rowing speed plus the current: 24 = 6(x + y) Upstream, speed is natural rowing speed minus current: 18 = 6(x - y) or 4 = x + y 3 = x - y Add 7 = 2 x x = 7/2...
*Wednesday, February 16, 2011 at 8:45pm by Dallas*

**Physics**

When a football in a field goal attemp reaches its max height how does its speed compare to its inital speed? a)it's zero b) it is less than its inital speed c)it is equal to its inital speed d)it is greater than its inital speed since at the max height v=0 isn't the answer a)?
*Tuesday, September 25, 2007 at 7:54pm by Tammy*

**Physics**

When a football in a field goal attemp reaches its max height how does its speed compare to its inital speed? a)it's zero b) it is less than its inital speed c)it is equal to its inital speed d)it is greater than its inital speed since at the max height v=0 isn't the answer a)?
*Wednesday, September 26, 2007 at 2:31pm by Tammy*

**sCiEnCe**

Can you define speed, motion, constant speed and average speed? And can you get me there formulas? Ex-Distance over speed THANKS MUCH! <333 Can you define speed, motion, constant speed and average speed? And can you get me there formulas? Ex-Distance over speed THANKS MUCH...
*Sunday, March 4, 2007 at 3:57pm by Jonas!*

**repost math question **

An aircraft flew 6 hours with the wind. The return trip took 7 hours against the wind. If the speed of the plane in still air is 276 miles per hour more than the speed of the wind, find the wind speed and the speed of the plane in still air. The wind soeed was ______ mph.
*Friday, October 22, 2010 at 11:46am by Anonymous*

**math (speed)**

A boat cruises downstream for 2 hours before heading back. It takes 3.5 hours going upstream to get back. If the speed of the stream is 8 mph, what is the speed of the boat in still water?:
*Saturday, September 22, 2007 at 1:19am by --*

**science/math**

A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.
*Saturday, September 24, 2011 at 2:54pm by Jonathan*

**Math**

her speed over groundis 18mph time=distance/speed
*Monday, March 7, 2011 at 9:08pm by bobpursley*

**math**

speed of a plane in still air is 450 speed of wind is 150
*Saturday, July 31, 2010 at 4:51am by joy*

**math**

Let x = Julia's speed, then x+9 = Bianca's. Time * Speed = Distance 4(x + x+9) = 140 Solve for x, then x+9.
*Monday, January 14, 2013 at 11:12pm by PsyDAG*

**math**

distance = speed * time, so if his freeway speed was s, then 4s + 5(s-20) = 449
*Monday, November 18, 2013 at 11:52pm by Steve*

**Math**

A sample of 500 drivers was asked whether or not they speed while driving. The following tables gives a two-way classification: Speed Never speed Male 222 78 Female 128 72 We wish to test whether gender and speeding are related at the 1% significance level.
*Saturday, December 14, 2013 at 11:33pm by Melina*

**Math**

A sample of 500 drivers was asked whether or not they speed while driving. The following tables gives a two-way classification: Speed Never speed Male 222 78 Female 128 72 We wish to test whether gender and speeding are related at the 1% significance level.
*Saturday, December 14, 2013 at 11:33pm by Melina*

**MATH**

Well, obviously the speed of the plane must be greater than the speed of the wind, so in x-y = 112 x must be the plane's speed and y the wind's speed so sub y = 23 into x+y = 158 x+23=158 x = 155 ^that's what you said.. you wrote 155 not me..?
*Monday, August 27, 2012 at 8:40am by Kian*

**Math**

Jimmy is traveling at a speed of 60 mi/h. What is his speed in feet per second?
*Saturday, August 15, 2009 at 6:26am by Regina*

**math/physics**

speed current/speed boat = tan 27 solve for currentspeed.
*Tuesday, September 21, 2010 at 4:21pm by bobpursley*

**followup question**

-- For this question, I know how to find the initial speed. If it asks, "What is the speed of the car just before it lands safely on the other side?" how do i calculate that because it's not the same as final velocity right? --------------------------------- you got u, the ...
*Friday, February 4, 2011 at 4:09pm by Damon*

**Physics**

The most probable speed is the peak of the speed distribution function. The average is the speed-weighted mean of the speed distribution function. They are not the same thing, mathematically
*Thursday, July 19, 2012 at 5:10pm by drwls*

**math**

Jimmy is travelinig at a speed of 135 mi/hr. what is his speed in feet per second?
*Monday, January 14, 2008 at 2:22pm by Anonymous*

**math**

Benny is traveling at a speed of 15 mi/h. What is his speed in feet per second?
*Saturday, February 16, 2008 at 12:17pm by justin black*

**physical science**

distance = speed * time 3 = v * 6 v = 1/2 meter /second note - that is called the "phase speed" and is the observed speed of a wave crest. It is not the speed of the propogation of the wave system called "group velocity".
*Friday, August 19, 2011 at 2:47am by Damon*

**MAth grade 8**

mr kumar lives in the eastern part of spore . he visits his aged parents , who lives 36 km away , every weekend he finds that is he increases the average speed of his vehicle by 12km/h, he could save 9 minutes of his travelling time. find the speed at which he travels before ...
*Thursday, November 10, 2011 at 8:25am by Aldwin*

**Math**

speed = distance/time. its speed was d/t on time its time would have been 1 hour less, so its speed would be d/(t-1)
*Tuesday, July 2, 2013 at 4:55pm by Steve*

**math**

The speed of a train A is 8mph slower than the speed of train B. Train A travels 230 miles in same time it takes train B to travel 270 miles. Find the speed of each train.
*Wednesday, April 21, 2010 at 12:36pm by Karen*

**math**

the speed of a train a is 6 mph slower than the speed of train b. train a travels 220 miles in the same time it takes train b to travel 250 miles. find the speed of each train
*Thursday, August 19, 2010 at 9:39pm by summer*

**math**

avgvelocity= distance/time 82/2= (38*1.47+speed*.53)/2hrs solve for speed.
*Wednesday, February 19, 2014 at 5:22pm by bobpursley*

**Math: Calculus - Vectors**

If the boat moves directly across then there is enough of the boats speed vector to counteract the river flow. That is 2m/s. So, the vector parallel to the shore (the river flow) speed is 2m/s. The TOTAL speed of the boat is 5m/s. Now solve this for the speed perpendicular to ...
*Tuesday, February 19, 2008 at 10:29pm by Quidditch*

**Math**

A small truck is to be driven 300 miles on a freeway at a constant speed of x miles per hour. Speed laws on the freeway require that a truck must be driven between 30 miles per hour and 70 miles per hour. assume that fuel cost $3.50 per gallon. in addition, assume that for a ...
*Tuesday, April 24, 2007 at 3:10am by nancy*

**Physics**

speed tangential=2.1/9.7 m/s tangential speed= w*r anglar speed=tangenital speed/radius
*Saturday, February 25, 2012 at 8:47am by bobpursley*

**Physics**

A ball is thrown horizontally from a height of 16.01 m and hits the ground with a speed that is 5.0 times its initial speed. What was the initial speed? Ok so I got a vertical final velocity of 17.714 m/s. Now I need to find the horizontal speed, correct? Which equation can I ...
*Sunday, November 4, 2007 at 11:53am by Lindsay*

**Physics**

The information provided can yield ground speed 200 km/h, and the speed with respect to the ground, but not air speed. Air speed is affected by wind speed, which is not given. Let V be the actual speed along its climbing path, in earth-frame coordinates. This is probably what ...
*Tuesday, July 6, 2010 at 5:46pm by drwls*

**Math**

Gavin's anemometer measures the wind speed at 44.14 kilometers per hour. 4 times faster than the wind speed 5 hours ago. What was the wind speed 5 hours ago?
*Monday, February 10, 2014 at 9:01pm by Anonymous*

**math**

a car travels at a constants speed and uses G(x) litres of gas per kilomotre, where x is the speed of the car in kilomotres oer hour and G(x)=(1280+x^2)/(320x) a>if fuel costs 1.29 per litre, determine the cost function C(x)that expresses the cost of the fuel for a 200KM ...
*Monday, October 31, 2011 at 10:14pm by invy*

**math**

Let the distance be D and the speed in still water be v. Here is what you know: D = speed * time = 4*(v-1.5) D = (4/3)*(v+1.5) Solve for both unknowns. 4(v-1.5) = (4/3)(v+1.5) (8/3)v = 6 + 2 = 8 v = 3 mph D = (4/3)(4.5) = (4/3)(9/2) = 6 miles
*Saturday, July 31, 2010 at 4:46am by drwls*

**Math**

An alien rocketship is travleing at a speed of 0.024 miles per minute. At this speed, how many inches will it travel in 1 second
*Thursday, January 26, 2012 at 7:59pm by Cassidy*

**college math**

the speed limit on a local highway is 65 miles per hour. what is this speed in km/hr
*Tuesday, June 19, 2012 at 9:43pm by Lourane*

**Math**

A wheel has a 32 inch diameter. The speed of a point on its rim is 44 ft/sec. What is its angular speed?
*Tuesday, February 26, 2013 at 8:39pm by Sarah*

**Physics**

The sun rises in the East. Therefore even if stationary, you are already moving East with the surface of the earth. That Eastward speed is 2 pi*earth radius / (24 hr*3600 seconds/hr) If you launch Eastward, your total speed is the speed relative to earth PLUS the speed of that...
*Wednesday, March 19, 2008 at 4:32pm by Damon*

**Math vocab**

What does distance/time/rate of speed mean?? Its all one word AND IM SOO CONFUSED! Movement? I am confused also. Rate of speed is not a common term. Speed is rate of motion , or rate of change of distance per time. i need help on my math vocab what is a sector What is the ...
*Wednesday, October 4, 2006 at 9:50pm by Alexis*

**physics**

If a projectile is launched vertically from the Earth with a speed equal to the escape speed, how far from the Earth's center is it when its speed is 1/9 of the escape speed?
*Saturday, April 28, 2012 at 12:35am by Turk*

**math**

by how many order of magnitute is the speed of light greater than the average speed of grey sound? Rose Diamond when he set the hight gate track 710 m record of for this 47.43 sec in April 2003 710m/47.43s = close to 15 m/s. The speed of light is 3 x 10^8 m/s or 30 x 10^7 m/s...
*Monday, October 16, 2006 at 9:56pm by math*

**Physics**

Its a question on scalar and vector quantities - speed and velocity have different meanings - speed has no direction, velocity does, hence given no direction, it would be speed. it is instantaneous as average would be 60-0 / 8 = x, whereas the manufacturer is trying to show ...
*Sunday, September 9, 2007 at 1:30pm by Steph*

**Physics**

Its a question on scalar and vector quantities - speed and velocity have different meanings - speed has no direction, velocity does, hence given no direction, it would be speed. it is instantaneous as average would be 60-0 / 8 = x, whereas the manufacturer is trying to show ...
*Sunday, September 9, 2007 at 1:30pm by Steph*

**science**

vertical speed=g*t=9.8*3 horizontal speed=7m/s speed= sqrt (7^2+29.6^2)
*Tuesday, November 3, 2009 at 7:00pm by bobpursley*

**Physics**

the vertical speed is vf= g *time the horizontal speed is the kicking speed. Vftotal=sqrt (Vh^2+ Vvf^2)
*Thursday, January 14, 2010 at 5:48pm by bobpursley*

**Physics**

how long does it take to fall 60m? h=1/2 g t^2 vf=g t then, for the speed, combine horizontal speed with the vertical speed as vectors.
*Wednesday, October 20, 2010 at 7:53pm by bobpursley*

**Math**

Over a fixed distance speed r varies inversely as time t. If the speed of a car is 30 mph when the time is 6 seconds what would the speed be of the car if the time was 4 seconds
*Thursday, July 11, 2013 at 12:45pm by Scott*

**phisecs**

22/2 = 11 m/s trick: during constant linear acceleration the average speed = (final speed + starting speed)/2
*Tuesday, February 18, 2014 at 12:38pm by Damon*

**SCIENCE**

A police man is driving a car with a speed of 30km/h,and firing a bullet having a speed of 150m/s towards another car which is moving ahead with a speed of 192km/f.At what speed will the bullet hit the car?
*Monday, July 16, 2012 at 3:38am by SWAPAN*

**physical science**

45mph*5280ft/mi*1m/3.2808ft*1hr/3600s speed limit= 20.12 m/s the speed limit is less than the speed of the car. yes, the car exceeded the speed limit.
*Thursday, January 9, 2014 at 8:07pm by sasha*

**Physics**

at 4s, the speed is 24 + 4g at 5s, the speed is 24 + 5g so the average speed over the interval (for one second) is 24 + 4.5g the distance is the speed times the time
*Sunday, September 23, 2012 at 10:58pm by Scott*

**physics**

This would make an excellent graphic solution...I am certain you have done distance, velocity graphs. If you want to nerd it out in math, work it in steps. 1. figure speed at 4.9 seconds, then that is te speed at 8 seconds.. 2. how far? figure the distance while accelerating, ...
*Monday, January 27, 2014 at 7:25pm by bobpursley*

**math**

a bus takes 12 hours to travel the same distance that an airplane travels in 1.5 hours. the average speed of the airplane ia 120 km per hour faster than five times the average speed of the bus. what is the average speed of the bus? let x represent the speed of the bus speed of...
*Wednesday, November 29, 2006 at 2:33pm by aaron*

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