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Which of the two:velocity or acceleration gives the direction of a body ?Give suitable examples.

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Nice try. Ask a school-mate to tutor you.

Posted on May 09, 2010

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How to get the average of the velocity if motion is under constant acceleration


Take the example of a racing car as pictured in the animation above. It takes the vehicle 10 minutes(0.17 hours) to travel 23km, from start to finish.

averagespeed.gif
Average speed = 23km / 0.17hrs = 135.29km/hr

averagevelocity.gif
Average velocity = 4km / 0.17hrs = 23.53km/hr

The average speed is 135.29km/hr but the velocity is only 23.53km/hr. The reason that velocity is lower, is that it can be positive and negative. Remember this from our earlier discussion on velocity? If not,click to refresh your memory. Since the velocity has negative and positive values some will cancel each other out, hence the lower value. Speed, however, can only be positive.

Jul 19, 2011 | Adobe Computers & Internet

1 Answer

How do you find initial velocity?


When given time (t), acceleration (a) and ending velocity (ve), use the following:

ivel1.gif

When given time (t), acceleration (a) and distance (d), use the following:

ivel2.gif

When given distance (d), ending velocity (ve) and acceleration (a), use the following:

ivel3.gif

Apr 12, 2011 | Computers & Internet

1 Answer

What is acceleration


In Physics acceleration is the rate of change of velocity over time. In one dimension, acceleration is the rate at which something speeds up or slows down.

In mechanics, for a body with constant mass, the acceleration of the body is proportional to the net force acting on it.

F=ma

where F is the resultant force acting on the body, m is the mas of the body, and a is its acceleration.

Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.

When an object's velocity changes, it accelerates. Acceleration shows the change in velocity in a unit time. Velocity is measured in meters per second, m/s, so acceleration is measured in (m/s)/s, or m/s2, which can be both positive and negative.

Go to the following links for more deatails



http://www.physicsclassroom.com/class/1dkin/u1l1e.cfm



http://library.thinkquest.org/10796/ch3/ch3.htm

Nov 22, 2010 | The Learning Company Achieve! Math &...

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I Want To Measure Air delivery of ceiling Fan 48 in. I Use Digital Anemometer. I Made A Metal Duct Of Dia 56 in & 36 In Ht. I See Difference in Air Velocity At Diff Points . How Do I Get Avg...


when your measureing air speed its best to build your box different cause theirs no way like you have it for it to be close to accurate in the a/c field we use a volmeter it gives us our pfm so we can convert to cfm if you take a 6 inch tap off the center of that can where the total air passes thru it it will give you a steady pressure to go by

Sep 23, 2010 | Carrier Heating & Cooling

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What is the formula for caculating velocity?


velocity = distance divided by time

for more clarification, check this link
http://ceres.hsc.edu/homepages/classes/astronomy/fall97/Mathematics/sec5.html

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I need to replace the throttle body sendsor on a 2001 chrysler sebring


remove and replace with the screws a little loose. Next set the voltage to 1.5 volts with the accelerator cable at idle postion. Now your done now after checking the mount screws are secured

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1 Answer

Vibration in front of car during acceleration only. get more intense at higher speeds


have the constant velocity joints checked for excessive play, also have the tires checked, a seperated internal tire cord can cause this also, u can rotoate the tires to see if vibration gets better. Any tire shop will inspect the front end and the tires for free and give you a report.

Oct 03, 2009 | 2001 Hyundai Sonata

1 Answer

Physics-kinematics


Nice try! Find an upper-class student to give you one-on-one tutoring with your homework assignment.

P.S. This is a "trick" question -- when a human-body strikes the hard ground, it will lose (not "loose") 100% of its velocity.

When a human-body contacts something fluid, such as water, then it's possible that it will lose 25% or 50% or 75% of its velocity, and continue to dive _below_ the surface of the water.

Sep 28, 2008 | Computers & Internet

5 Answers

12th science maths(derivation,vector,conic section)


This is a repair and consultation forum. Are you doing homework, or do you have a technical question on a consumer, industrial, or commercial electronic product?

Feb 25, 2008 | Televison & Video

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