Wednesday
April 16, 2014

Search: velocity

Number of results: 16,636

science
a jet is moving 700 per hour south in a wind current that is going 70 km/hr south. what is the velocity of the jet?
Wednesday, April 14, 2010 at 8:19pm by velocity

Velocity
Which of these statements are true... I think (1)and (5) are correct 1)A reversing vehicle must have negative velocity 2) A stationary object must have zero position 3)Two vehicles trvelling at the same speed at the same instant of time on the same road must have the same ...
Sunday, March 23, 2008 at 7:18am by leo

Velocity
see above.
Sunday, March 23, 2008 at 7:18am by bobpursley

velocity
Angular vleocity of a rotating object from 650degrees/s to 495degrees/s in 1.2 seconds. What is the angular acceleration
Wednesday, November 4, 2009 at 8:44pm by vaughn

VELOCITY
What are some examples of velocity?
Sunday, November 14, 2010 at 12:57pm by Anonymous

VELOCITY
walking east. running upstairs.
Sunday, November 14, 2010 at 12:57pm by bobpursley

velocity
crystal can ride her bike 10 km in 2.1 hours, what is her average velocity?
Monday, December 20, 2010 at 11:45pm by jessica

velocity
10/2.1 = 4.76 km per hour
Monday, December 20, 2010 at 11:45pm by drwls

Velocity
An object is thrown directly downwards from a height of 60m with an initial velocity of 11m/s. What will be its velocity on impact? v^2 = U^2 + 2as a= 9.81m/s^2 u = 11m/s s = 60m v^2 = 11m/s + 2 * 9.81m/s^2 * 60 = 1188.2m^2/s^2 = square root of 1188.2m^2/s^2 = 34.47m/s Is this...
Monday, June 3, 2013 at 10:40pm by Danny

Velocity
v^2 = 11m/s + 2 * 9.81m/s^2 * 60 should read: v =sqrt( 11m/s ² + 2 * 9.81m/s^2 * 60 ) I get about 36 m/s
Monday, June 3, 2013 at 10:40pm by MathMate

velocity
what does velocity mean in physics?
Monday, July 15, 2013 at 9:10pm by physics

velocity
http://hyperphysics.phy-astr.gsu.edu/hbase/vel2.html http://en.wikipedia.org/wiki/Velocity
Monday, July 15, 2013 at 9:10pm by Elena

Calculus Help
If a ball is thrown vertically upward from the roof of 64 foot building with a velocity of 32 ft/sec, its height after t seconds is s(t)=64+32t–16t2. What is the maximum height the ball reaches "in ft"? What is the velocity of the ball when it hits the ground (height 0) "in ft...
Saturday, February 8, 2014 at 1:01am by Calculus Velocity

relative velocity
A radar antenna is tracking a satellite orbiting the earth. At a certain time, the radar screen shows the satellite to be 159km away. The radar antenna is pointing upward at an angle of 59.3 from the ground.Fine the x and y components(in km) of the position of the satellite ...
Thursday, February 1, 2007 at 4:35pm by leann

Velocity Ratio
Does my work make sense? A turnbuckle is needed to apply an 8kN force on a cable. If the efficiency of the turnbuckle is 40% and the force applied is 159.155N with a lever of 20cm in length. a) Find the mechanical advantage. Mechanical Advantage=Load/Effort M.A.=8000N/159.155N...
Friday, March 20, 2009 at 7:12pm by Henri

Terminal Velocity
How can u determine that a falling object has reached terminal velocity from a velocity time graph of its motion? u can determine if a falling object has reached terminal velocity from a velocity-time graph of its motion by its stop of acceleration. The falling object no ...
Tuesday, November 30, 2010 at 7:46pm by Teya

Terminal Velocity
If you have a velocity versus time graph, the distance traveled is the area under that velocity curve. For every little vertical slice of the graph from the time axis up to the velocity curve the little area around that vertical line is velocity times that little time, which ...
Tuesday, November 30, 2010 at 7:46pm by Damon

Terminal Velocity
thanks for the explanation Damon, it was very helpful:) thanks so much:)
Tuesday, November 30, 2010 at 7:46pm by Teya

Terminal Velocity
You are welcome. Congratulations on solving your first calculus problem :)
Tuesday, November 30, 2010 at 7:46pm by Damon

Relative velocity
A pet-store supply truck moves at 25.0 m/ north along a highway. Inside, a dog moves at 1.75 m/s at an angle of 35.0 degrees east of north. What is the velocity of the dog relative to the road?
Sunday, January 9, 2011 at 10:29pm by Sofia

Relative velocity
Add the two vectors.
Sunday, January 9, 2011 at 10:29pm by drwls

Finding Velocity
A brick falls freely from a high scaffold. A. What is its velocity after 4.0s? B. How far does the brick fall during the first 4.0s? I don't know what formula to use. I only have time, and I guess the first velocity would be 0s.
Sunday, October 9, 2011 at 6:42pm by -Untamed-

Finding Velocity
finalvelocity=initialvelocity + g*time g= 9.8m/s^2 for how far, see your other post.
Sunday, October 9, 2011 at 6:42pm by bobpursley

terminal velocity
A que ball dropped from a third floor window will reach what speed/velocity? Is that high enough to reach terminal velocity?
Thursday, August 23, 2012 at 7:08pm by Richard

terminal velocity
When an object is dropped, the velocity starts at zero and increases continuously until the object strikes the ground. Neglecting wind resistance, the final velocity is: V^2 = Vo + 2g*h. Vo = 0 = Initial velocity. g = 9.8 m/s^2. h = Ht. above gnd. The ht. is the only parameter...
Thursday, August 23, 2012 at 7:08pm by Henry

Relative velocity
25.1
Sunday, January 9, 2011 at 10:29pm by Anonymous

Physics
A small block of mass m1 = 0.400 kg is released from rest at the top of a curved-shaped frictionless wedge of mass m2 = 3.00 kg, which sits on a frictionless horizontal surface as in Figure P9.60a. When the block leaves the wedge, its velocity is measured to be v1 = 5.00 m/s ...
Tuesday, October 26, 2010 at 7:22pm by Velocity and Height

Physics
The first stage of a space vehicle consumed fuel and oxidizer at the rate of 1.60 multiplied by 104 kg/s, with an exhaust speed of 2.55 multiplied by 103 m/s. (a) Calculate the thrust produced by these engines. answer should be in N (b) Find the acceleration of the vehicle ...
Tuesday, October 26, 2010 at 7:25pm by Force and Velocity

Algebra
If a ball is thrown vertically upward from a height of 56ft. above ground with an initial velocity of 40ft. per second, then the height of the ball above ground t seconds after it is thrown is given by f(t)=-16t^2 + 40t +56. How many seconds will elapse after the ball is ...
Friday, October 21, 2011 at 5:32pm by Velocity per second

Algebra
okay, so I solved as follows: -16t+40t+56=0 (4t+4)(-4t+14) 4t+4=0 and -4t+14=0 4t=4 and -4t=-14 4t=4/4 and -4t= -14/-4 = t=1 and t = 7/2 Now, I am lost at what to do from here.
Friday, October 21, 2011 at 5:32pm by Velocity per second

Algebra
duh, I got it. you divide 7/2 to equal 3.5
Friday, October 21, 2011 at 5:32pm by Velocity per second

Calculus - average velocity
*VELOCITY OF A CAR* Suppose the distance s (in feet) covered by a car moving along a straight road after t sec is given by the function s = f(t) = 2t^2 + 48t. a. Calculate the average velocity of the car over the time intervals [20,21], [20, 20, 20.1], and [20, 20.01]. b. ...
Sunday, September 21, 2008 at 4:07pm by B <3

Calculus - average velocity
The instantaneous velocity is indeed 4t+48 However, the average velocity is the average of the instaneous velocties at two times. Example, in a, times 20,and times 20.1 v(20)=4t+48=128 v(20.1)=128.4 average: 128.2
Sunday, September 21, 2008 at 4:07pm by bobpursley

Calculus - average velocity
do you have the dike too?
Sunday, September 21, 2008 at 4:07pm by Anonymous

physics: escape velocity
You are on Pluto and would like to send a probe into space so that it does not fall back to the surface. What minimum launch speed do you need? (The mass of Pluto is 1.3x^22 kg and the radius of Pluto is 1.18x10^6 m). Answer in km/s. I have used the velocity of escape = (...
Friday, March 26, 2010 at 9:52am by Laramie

physics: escape velocity
PE at surface=KE at launch GMp/radius = 1/2 v^2 v= sqrt(2GMp/r) where G is 6.67E-11 v=sqrt(2*6.67E-11*1.3E22)/1.18E6) You seem to have difficulty operating your calculator. Put this into the Google search window: sqrt(2*6.67E-11*1.3E22/1.18E6)
Friday, March 26, 2010 at 9:52am by bobpursley

physics: escape velocity
Hmm. I wonder how I can correct my poor usage. Thank you very much!
Friday, March 26, 2010 at 9:52am by Laramie

velocity and acceleration
its 20 000km from manchester to sydney australia the rocketdoes the journey in 4 hours. whats the average speed for the trip in m/s?
Thursday, August 5, 2010 at 1:00pm by jerry.

velocity and acceleration
20,000 km * 1,000 = 20,000,000 m in 4 hours 4 hours = 60 * 60 = 3,600 seconds Can you take it from there?
Thursday, August 5, 2010 at 1:00pm by Ms. Sue

Physics - Relative velocity
A barge is heading directly across a river at35km/h while you are walking on the barge at 4km/h in the same direction as the barge is heading. The current is flowing downstream at 1.4km/h. a) What is your velocity relative to the shore? (7.6km/h) b) What would you velocity be ...
Monday, August 9, 2010 at 8:59am by Shaila

Physics - Relative velocity
a) No of course not. If the barge is going 35km/hr whether you are walking or not, in still water, the relative velocity is 35km/hr velocity relative to shore is the vector sum velocity=sqrt((35+4)^2+1.4^2)
Monday, August 9, 2010 at 8:59am by bobpursley

Angular Velocity Question
A disk with a mass of 18 kg, a diameter of 50 cm, and a thickness of 8 cm is mounted on a rough horizontal axle as shown on the left in the figure. (There is a friction force between the axle and the disk.) The disk is initially at rest. A constant force, F = 70 N,is applied ...
Monday, October 25, 2010 at 6:13pm by Oscar

Angular Velocity Question
Figure moment of inertia I for the disk. wi=0 Torque= I*angacceleration 70*.25*trigfunction= I acceleration I dont understand the figure, so you will need to account for the angle. It is probably cos 37 find acceleration. then wf=wi+I acceleration*time figure wf at time=2 Now...
Monday, October 25, 2010 at 6:13pm by bobpursley

Angular Velocity Question
I'm not getting the correct answer this way. Maybe I'm doing something wrong.
Monday, October 25, 2010 at 6:13pm by Oscar

SPEED And VElocity
I thought that they were the same thing. Are they not? What would be some examples for Velocity?
Saturday, November 13, 2010 at 9:53pm by Anonymous

Displacement and Velocity
A turtle moves 3.5m [E] in 136 s and then moves 1.7m [W] in 88 s. a) What is the average speed of the turtle? b) What is the average velocity of the turtle? average speed: D/T = 3.5m + 1.7m = 5.2m/ 224s = 0.024m/s average velocity:??????????/
Saturday, November 13, 2010 at 10:25pm by Anonymous

Displacement and Velocity
Is the way I calculated speed right?
Saturday, November 13, 2010 at 10:25pm by Anonymous

SPEED and VELOCITY
I thought that they were the same thing. Are they not? What would be some examples for Velocity
Sunday, November 14, 2010 at 12:32pm by Anonymous

DISPLACEMENT and VELOCITY
A turtle moves 3.5m [E] in 136 s and then moves 1.7m [W] in 88 s. a) What is the average speed of the turtle? b) What is the average velocity of the turtle? average speed: D/T = 3.5m + 1.7m = 5.2m/ 224s = 0.024m/s average velocity:?????????? Have I calculated speed correctly?
Sunday, November 14, 2010 at 12:34pm by Anonymous

DISPLACEMENT and VELOCITY
speed is correct. avg velocity=dislacement/time = (3.5E+1.7W)/time= 1.8m/224s East
Sunday, November 14, 2010 at 12:34pm by bobpursley

DISPLACEMENT and VELOCITY
Thanks bobpursley.
Sunday, November 14, 2010 at 12:34pm by Anonymous

DISPLACEMENT and VELOCITY
Velocity needs both Magnitude (speed) AND Direction.
Sunday, November 14, 2010 at 12:34pm by Damon

SPEED and VELOCITY
Speed is the magnitude of a velocity vector Velocity, like any vector, requires both magnitude and direction. For speed, a speedometer works For velocity you need a speedometer AND a compass.
Sunday, November 14, 2010 at 12:32pm by Damon

science(velocity&speed)
these are the only 2 questions i dont get: -how long would it take for a car to travel a distance of 200 km if it is travaling at a velocity of 55 km/hr? is the answer 4hrs and 3 min.? -an an carries food at a speed of 1 cm/s.how long will it take the ant to carry a cookie ...
Tuesday, January 18, 2011 at 5:39pm by please i need help!!!

science(velocity&speed)
For the first part of y our post, try some of the following: http://search.yahoo.com/search?fr=mcafee&p=how+long+would+it+take+for+a+car+traveling+at+55km%2Fhr+to+travel+200+km%3F For the 2nd part, try here: http://search.yahoo.com/search?fr=mcafee&p=how+long+would+an+ant+at+a...
Tuesday, January 18, 2011 at 5:39pm by SraJMcGin

Physics - final velocity?
At sea level, a hydrogen molecule in the air has an average kinetic energy of 5.53×10-21 J. Its mass is 3.32×10-27 kg. The hydrogen molecule shoots straight up without colliding with the molecules in the air. (Assume that you can use g = 9.81 m/s2; although we’ll see in ...
Saturday, February 12, 2011 at 3:22pm by Em

Physics - final velocity?
final velocity at max height is zero.
Saturday, February 12, 2011 at 3:22pm by bobpursley

Velocity and Displacement
The Space Shuttle travels at a speed of about 7.60 103 m/s. The blink of an astronaut's eye lasts about 120 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye?
Thursday, September 1, 2011 at 4:25pm by Fainah

Velocity and Displacement
A plane is sitting on a runway, awaiting takeoff. On an adjacent parallel runway, another plane lands and passes the stationary plane at a speed of 47 m/s. The arriving plane has a length of 32 m. By looking out the window (very narrow), a passenger on the stationary plane can...
Thursday, September 1, 2011 at 4:26pm by Fainah

Velocity and Displacement
How long does it take to go 32 meters at 47 m/s? 32 = 47 t t = 32/47
Thursday, September 1, 2011 at 4:26pm by Damon

Velocity and Displacement
d = 7.6*10^3 * 0.12s = 912m. 912m / 91.4m/field = 9.98 Football field.
Thursday, September 1, 2011 at 4:25pm by Henry

Velocity and Acceleration
A car is travelling on a highway Can it have a negative velocity & a positive acceleration at the same time? Can the car change d direction of its velocity when travelling with constant acceleration?
Wednesday, October 5, 2011 at 10:14pm by -Untamed-

Velocity and Acceleration
If it's sliding backwards but slowing down, that's v<0 a>0 a car traveling with constant speed in a circle has a constant acceleration (toward the center of the circle) but a changing velocity.
Wednesday, October 5, 2011 at 10:14pm by Steve

Velocity and Displacement
A stone falls freely from rest for 8.0s. A. Calculate the stone's velocity after 8.0s. V2-V1+at V2 = (0) = 9.8(8.0) V2 = 78.4m/s B. What is the stone's displacement during this time? d = (v2 + v1)t/2 d = (78.4 + 0)/2(8.0) d = 313.6m
Sunday, October 9, 2011 at 8:55pm by -Untamed-

Velocity and Displacement
You seem to be mixing up your = and - signs in the first two equations. Those were probably just typing errors. I agree with your answers.
Sunday, October 9, 2011 at 8:55pm by drwls

Velocity and Displacement
.68
Thursday, September 1, 2011 at 4:26pm by kiwi

Physics Velocity Question
The equation for the displacement in meters of an object moving in SHM is x(t) = 1.50 cos (4.20t) where t is in seconds. (a) What is the maximum speed of the object? (b) At what time does it first reach the maximum speed? I already got 6.3m/s for A and I got B wrong. I thought...
Friday, June 15, 2012 at 8:41pm by Jennifer

Physics Velocity Question
v = - 1.50 (4.20) sin 4.2 t the maximum speed is when the sine function is +1 or -1 since the sign is negative the sine function reaches -1 first. |v|max = max speed = 1.5*4.2 = 6.3 m/s this is when 4.2 t is pi/2 radians t = pi/8.4 = .374 s
Friday, June 15, 2012 at 8:41pm by Damon

physics angular velocity
A 20g steel weight is placed on the edge of 1 30cm diameter plastic disk. The coefficient of static friction between the steel weight and plastic disk is 0.4. At what angular velocity will the weight slide off the disk?
Monday, March 25, 2013 at 11:55am by Kristy

Linear velocity/ acceleration
A body moves 180 degrees from point A to point B in a semi circle. The diameter of the semi circle is 2m. Calculate the distance traveled between point A and point B. C = pi * d = 3.1416 * 2m = 6.283 = 6.283/ 2 = 3.141 ANS = 3.141 Is this done correctly??
Monday, June 3, 2013 at 9:35pm by Danny

Linear velocity/ acceleration
C = pi * d = 3.1416 * 2m = 6.283 distance= 1/2 C = = 6.283/ 2 = 3.141 ANS = 3.141
Monday, June 3, 2013 at 9:35pm by bobpursley

Physics-rain velocity to bike
Rain falls vertically downward with a velocity of 2.4m/s. A boy moves at a speed of of 6m/s east in a bicycle with an umbrella. What is the velocity of the rain with the respect to the boy. What angle from horizontal should he hold his umbrella?
Friday, November 30, 2012 at 2:01pm by Daryl

Physics-rain velocity to bike
sqrt(2.4^2+36) tan theta = 2.4/6
Friday, November 30, 2012 at 2:01pm by Damon

Physics (Velocity in two dimensions)
Please help, The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval? Express...
Thursday, February 21, 2013 at 7:22pm by Kathy

Physics (Velocity in two dimensions)
Please help: The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval? Express...
Thursday, February 21, 2013 at 7:20pm by Kathy

Physics (Velocity in two dimensions)
Please explain, A clown in a circus is about to be shot out of a cannon with a muzzle velocity of 15.2 m/s, aimed at 52.7 above the horizontal. How far away should his fellow clowns position a net to ensure that he lands unscathed? The net is at the same height as the mouth ...
Saturday, February 23, 2013 at 1:55pm by Kathy

Physics-rain velocity to bike
2.5
Friday, November 30, 2012 at 2:01pm by TARUNIMA

relative velocity please help exam tom.
the paper delivery boy tires to throw the paper ubti your narrow driveway without slowing down. his pickup truck travels at 10 mph and he throws the paper at 20 mph just as the truck passes the drive way. a) in what direction should he throw the paper in order for it to land ...
Thursday, October 18, 2007 at 1:32am by candance

relative velocity please help exam tom.
For the paper to go through the air perpendicular to the street and the front of the house, it should be thrown backward relative to the car, with a relative velocity of -10 mph. The forward component of motion relative to the car will be sqrt [(20)^2 - (10)^2] = 17.3 mph That...
Thursday, October 18, 2007 at 1:32am by drwls

Physics - acceleration..need to find velocity
I am given two points on an acceleration vs time graph: (-2,13),(4,0). When t = -2s, v = 10 m\s. What velocity at t = 6s? I believe acceleration average is (-13/6), but how do I solve the rest get the correct answer, which is 44.7 m/s? Any help or hints would be greatly ...
Friday, October 21, 2011 at 11:22am by Belinda

Physics - acceleration..need to find velocity
If v=10 when t= -2, and you have negative acceleration, v is decreasing. How can it increase to 44.7? Is there a typo in here somewhere?
Friday, October 21, 2011 at 11:22am by Steve

Physics - acceleration..need to find velocity
Never mind. I see acceleration is not constant. However, I get 15.3 m/s. I will have to recheck my math.
Friday, October 21, 2011 at 11:22am by Steve

Physics - acceleration..need to find velocity
OK. Finally got a moment, If we assume a linear function for acceleration, and fitting it to the two points, we get a = -13/6 t + 26/3 v = V0 + 26/3 t - 13/12 t2 v(2) = 10 = V0 - 26/3 * 2 - 13/12 * 4 10 = V0 -65/3 V0 = 95/3 So, now we know v(t) = 95/3 + 26/3 t - 13/12 t2 v(6...
Friday, October 21, 2011 at 11:22am by Steve

relative velocity please help exam tom.
a swimer covers ditance d in time t1 in to and rro motion , he travels ditance 2d in still water in time t3 and covers distance d upstream and down stream in t2 prove that squre of t1=t2.t3
Thursday, October 18, 2007 at 1:32am by sono

Physics - acceleration..need to find velocity
An autos velocity increases uniformly from 6m/s to20m/s while covering 70m.find the acceleration and the time taken.
Friday, October 21, 2011 at 11:22am by Anonymous

physical science
velocity
Monday, February 16, 2009 at 7:49pm by drwls

PHYSICS
velocity
Monday, March 19, 2007 at 3:59pm by purri

Phsics
I want to see the calculations.
Wednesday, February 1, 2012 at 8:55am by The range of a target is found to be 20km. A shell leaves a gun with a velocity of 500ms-1. What must be the angle of elevation of the gun if the ground is leueled?

Physics
I need the answer
Tuesday, January 31, 2012 at 10:03pm by The range of a target is found to be 20km. A shell leaves a gun with a velocity of 500ms-1. What must be the angle of elevation of the gun if the ground is leueled?

physics
the velocity
Friday, November 13, 2009 at 12:39pm by tamiatha

science
terminal velocity.
Thursday, May 6, 2010 at 7:48pm by DrBob222

science
velocity. Mass.
Saturday, September 25, 2010 at 4:19pm by bobpursley

A man wants to cross a river 500 m wide which flows at speed of 2 km/hr.the man rows a boat perpendicular to the river flow at 3 km/hr relative to the river.what is relative velocity of boat relative to the ground?
Velocity of boat relative to the river(vbr):3 km/hr, velocity of river relative to ground(vrg) :2 km/hr. Velocity of boat relative to the ground(vbg): square root of 9+4
Sunday, November 20, 2011 at 6:04pm by Physics

Science
acceleration = (final velocity -initial velocity)/ time
Tuesday, September 14, 2010 at 7:34pm by TutorCat

physics
Vf= final velocity Vi= initial velocity
Thursday, October 7, 2010 at 8:05pm by bobpursley

Chemistry
Density=13.6=9.83/Velocity Velocity=9.83/13.6
Tuesday, June 7, 2011 at 1:10pm by Vince

physics
acceleration= (final velocity-initial velocity)/time
Wednesday, June 15, 2011 at 2:49am by TutorCat

Science
velocity = distance traveled/time
Wednesday, October 3, 2007 at 8:55pm by DrBob222

Physics
time= distance/velocity
Friday, February 8, 2008 at 5:49pm by bobpursley

Physics
speed; velocity; non-accelearating
Monday, September 15, 2008 at 11:07am by bobpursley

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members