Sunday

April 20, 2014

April 20, 2014

Number of results: 208

**Physics**

Which of the following best describes kinematics? a) Kinematics is a part of mechanics that involves the description of motion. b) Kinematics is the branch of physics that deals with the motion of objects and the action of forces on the objects. c)Kinematics is the study of ...
*Friday, September 14, 2012 at 5:31pm by Kevin *

**kinematics**

Since you received no answer, here are some links on kinematics for reference: http://search.yahoo.com/search?fr=mcafee&p=kinematics Sra
*Sunday, April 17, 2011 at 4:15pm by SraJMcGin*

**Physics**

You should have seen the equation in your text by now. It is the solution to Newton's second law of motion when the acceleration (g) is constant and the initial velocity is zero. You can call it kinematics, mechanics or physics. When I attended college, kinematics meant ...
*Sunday, November 21, 2010 at 10:10pm by drwls*

**physics**

Some would call it kinematics; when I went to college, it was called mechanics. Kinematics meant something else. (It was about stuff like gear teeth and four-bar linkages - relative motion in machines). Anyway let's pick the metric system to do it in and assume the player ...
*Thursday, December 10, 2009 at 10:34pm by drwls*

**Physics**

c. use kinematics equation y=vi*t+1/2at^2 vi= 0 (because rock was dropped) a=-9.8m/s^2 t= 4s (time given) plug in and you get your height a. use kinematics equation vf^2=vi^2+2ay vi=0 (rock dropped) a=-9.8 y= (whatever you got from part c) plug in and solve b. ?
*Tuesday, April 6, 2010 at 12:19am by echem*

**Physics - urgent ; test Monday**

Divers entertain tourists in Punta Cana by diving froma cliff 36 meters above water. Determine the landing speed; ignore air resistance and assume the object starts from rest. I'm supposed to be using kinematics formulas. I tried using d=V(i)t+1/2at^2 and then plussing the ...
*Saturday, February 21, 2009 at 8:10pm by Li*

**physics **

A door starts from rest and swings with an angular acceleration, alpha, α = 6 rad/s2, where t is in seconds. Determine the angle in radians through which the door turns in the first 3 s. Hint: kinematics equation for angular position (i.e., angle) is exactly the same as ...
*Tuesday, March 1, 2011 at 5:39pm by Anonymous*

**physics **

A door starts from rest and swings with an angular acceleration, alpha, α = 6 rad/s2, where t is in seconds. Determine the angle in radians through which the door turns in the first 3 s. Hint: kinematics equation for angular position (i.e., angle) is exactly the same as ...
*Wednesday, March 2, 2011 at 12:08pm by Anonymous*

**physics**

Kinematics Equations: Vx1 = Vx0 + axΔt (Vx1)^2 = (Vx0)^2 + 2axΔx Δx = Vx0Δt + ½ ax(Δt^2) Using the second kinematics equation, we can solve for Δx. (Vx1)^2 = (Vx0)^2 + 2axΔx Plug in what you know: (45 m/s)^2 = (0 m/s) + 2(9.8m/s^2)(? m) 2025 ...
*Wednesday, October 6, 2010 at 11:27pm by Steven*

**Physics ASAP**

http://www.physicstutorials.org/home/mechanics/1d-kinematics/projectile-motion?start=1
*Tuesday, May 28, 2013 at 5:49pm by Elena*

**Physics**

is this equation from kinematics?
*Sunday, November 21, 2010 at 10:10pm by Patel*

**physics kinematics**

Incomplete.
*Thursday, September 13, 2012 at 11:52am by Henry*

**Physics (Kinematics)**

s= at²/2
*Tuesday, August 13, 2013 at 7:46am by Elena*

**Physics**

First need to convert km/hr to meters/second (I got around 3333.33 m/s but you might want to double check that) so 3333.33 is your initial velocity v_i using kinematics equation: v_f=V_i+at y=v_i*t+(1/2)at^(2) the highest point the projectile reaches is when v_f is zero so ...
*Tuesday, April 6, 2010 at 1:27am by echem*

**Physics**

How do I determine the horizontal distance traveled by water passing through a hole of a punctured water bottle. You must use bernoulli's and Kinematics, and find delta x in term of h and y. ( y = the height of water inside the bottle , h = the height of the hole to the floor...
*Saturday, August 13, 2011 at 8:11am by AfterLife*

**physics**

http://www.sparknotes.com/physics/kinematics/2dmotion/section2.rhtml
*Wednesday, August 29, 2012 at 6:40pm by bobpursley*

**kinematics**

In my answer to 2), "is" should be "if". Sorry about that
*Friday, June 19, 2009 at 6:49am by drwls*

**11th matriculation physics kinematics**

300km/h
*Sunday, July 18, 2010 at 11:34am by dhivya*

**physics kinematics**

i dont understand where to start from!
*Monday, March 7, 2011 at 11:34pm by Diyan*

**kinematics**

What are K, U and u ? There is no question here. Your location is not the subject
*Wednesday, December 26, 2012 at 5:23am by drwls*

**physics**

Oh okay. But then what kind of kinematics equation would you use?
*Saturday, October 8, 2011 at 5:26pm by Cam*

**Physics, Kinematics**

That isn't correct. Any other thoughts on this problem?
*Thursday, December 1, 2011 at 8:06pm by Jackie*

**physic**

From kinematics for accelerated motion s=at^2/2 a=2s/t^2 ε =a/R
*Thursday, March 22, 2012 at 1:43pm by Elena*

**Physics 12 Kinematics**

I have to do this with only variables...
*Friday, November 8, 2013 at 8:47pm by Oscar*

**Physics 12 Kinematics**

And thank you so much for taking the time to help me.
*Friday, November 8, 2013 at 8:47pm by Oscar*

**11th matriculation physics kinematics**

what is 300/sin45? what is 300tan45?
*Sunday, July 18, 2010 at 11:34am by bobpursley*

**Physics**

a) Kinematics is a part of mechanics that involves the description of motion.
*Friday, September 14, 2012 at 5:31pm by Elena*

**kinematics**

these are two similar kinematics maths question which i dont know. Please help! 1)A particle moves in a straight line so that its distance, s metres, from a fixed point O is given by s = 2t^3 - 3t^2 - 12t + 6, where t is the time in seconds after passing O. Find the minimum ...
*Friday, June 19, 2009 at 6:49am by zachary*

**Kinematics**

A car has an acceleration of 2 m/s2. What is its speed 3 seconds after it starts moving?
*Tuesday, February 1, 2011 at 7:31pm by Randy*

**science**

Hopefully the following will assist you: 1. http://en.wikipedia.org/wiki/Equation_of_motion 2. (part II of #1): http://en.wikipedia.org/wiki/Lagrangian_mechanics 3. http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/Kinematics/EquationOfMotion.html 4. (part II of #3): http://www....
*Wednesday, June 25, 2008 at 11:59am by SraJMcGin*

**Physics 12 Kinematics**

But isn't the bullet going up ? I'm so confused on how to write this with variables... So Dy = T x-9.8?
*Friday, November 8, 2013 at 8:47pm by Oscar*

**Physics**

That's interesting...because the altitude is so high you have to deal with escape velocity instead of the usual kinematics.
*Tuesday, April 6, 2010 at 1:27am by echem*

**physics kinematics**

Instead of posting the same question five times, try showing your work.
*Monday, March 7, 2011 at 11:34pm by drwls *

**physics**

The vertical leap of a professional NBA athlete is reported to be 47.3 inches. What is his takeoff speed? in m/s? is this kinematics??
*Thursday, December 10, 2009 at 10:34pm by Jan*

**kinematics**

A tennis ball is hit with a resultant velocity of 70 m/s^-1 at 20 degrees. What are the vertical and horizontal velocities?
*Sunday, April 17, 2011 at 4:15pm by Madeline*

**Physics**

Well in Kinematics..theres 1 equations that is x= v0t + .5 (a)t^2 and that your equation can be simplified to that if the initial velocity is 0...we would get x= .5(a)t^2..this is to find the distance (displacement).
*Monday, September 3, 2007 at 4:33pm by Student*

**physics**

dynamics. Another term more often used these days is kinematics, but that had a different meaning when I went to college.
*Thursday, January 8, 2009 at 8:12pm by drwls*

**Physics**

I haven't gotten to the chapter on friction yet, so I am totally clueless...I am still on kinematics and biomechanics right now.
*Thursday, October 22, 2009 at 3:21pm by Nikita*

**KINEMATICS IN ONE AND TWO DIMENSIONS**

CAN U PLSS HELP ME TO ASNWER THE PROBLEMS BY J.CUTNELL. PLSSS RUSH I NEED THE ANSWERS. THANK YOU GUYS.
*Thursday, September 1, 2011 at 4:26pm by Gem*

**Physics**

1. F=ma m=30kg a=0.4 m/s² F=30*0.4 = 12 N Net force on the tobaggan in the direction of motion = 2*25N*cos(20°) = 47 N Friction force = 47 N - 12N = 35 N 2. Use the equations of kinematics: Equations of Kinematics F = force of friction = 35 N m = mass = 30 kg a = ...
*Tuesday, October 19, 2010 at 5:47pm by MathMate*

**physics**

My teacher needs us to formulate a question for the science fair. Till now, we have only learned the Kinematics equations, HELP, please....
*Tuesday, November 5, 2013 at 6:07pm by Lily Gomez*

**physics- kinematics**

It is because g oppose acceleration meaning that it becoms negative acceleration
*Thursday, October 2, 2008 at 1:38pm by chidzani mbise*

**physics- kinematics**

It is because g oppose acceleration meaning that it becoms negative acceleration
*Thursday, October 2, 2008 at 1:38pm by chidzani mbise*

**physics-kinematics**

average acceleration =(final velocity-initial velocity)/time =(20 m/s - 0 m/s)/3 s =? m/s²
*Tuesday, February 15, 2011 at 12:04pm by MathMate*

**Kinematics**

A car traveling with a velocity of 4 m/s accelerates at 3 m/s^2(squared) for 10 s. How far does the car travel in the 10s?
*Sunday, June 10, 2012 at 7:42pm by Anonymous*

**math/physics**

This IS a kinematics problem. Any equation used to solve it involves kinematics. An exact solution would require solving a (kinematic) differential equation. A good approximation to part (a) can be obtained by assuming an average air resistance force of |V|/60 , where V is the...
*Saturday, November 8, 2008 at 10:50pm by drwls*

**kinematics**

An individual's arm segment is .18m long and has an angular velocity of 117degrees/s. What is the tangential velocity of the wrist?
*Wednesday, November 4, 2009 at 8:46pm by Dawn*

**science**

use kinematics: initial velocity will be 100m/s and final velocity is zero. and the gravity is 9.8m/ss
*Wednesday, October 2, 2013 at 10:07pm by xdsd*

**Physics**

In physics, how do you solve for the magnitude in 2-D kinematics and what are the x and y-components?
*Tuesday, September 27, 2011 at 8:31pm by Astrogirl*

**Kinematics**

d = Vo*t + 0.5a*t^2 d = 4*10 + 1.5*10^2 = 190 m.
*Sunday, June 10, 2012 at 7:42pm by Henry*

**Physics (Kinematics)**

hf=hi+vi*t-4.9 t^2 hf, hi =0 solve for t.
*Saturday, October 6, 2012 at 2:32am by Anonymous*

**Physics (Kinematics)**

A race car accelerates uniformly from 10 m/s to 50 m/s in 2 seconds. Determine the acceleration of the car and the distance traveled.
*Tuesday, August 13, 2013 at 7:44am by Ashley*

**Physical Science**

You are given initial velocity, final velocity, and time. Look to your kinematics equations to substitute these values and isolate acceleration.
*Saturday, March 6, 2010 at 6:12pm by anony mouse*

**Physics (Kinematics)**

A car starts from rest and accelerates uniformly for 10 seconds over a distance of 200 m. Determine the acceleration of the car.
*Tuesday, August 13, 2013 at 7:45am by Ashley*

**Physics (Kinematics)**

s=at²/2 a=2s/t² = …
*Tuesday, August 13, 2013 at 7:45am by Elena*

**physics**

If the angular quantities θ,ω,α were specified in terms of degrees rather than radians, how would the kinematics equations for uniformly accelerated rotational motion have to be altered?
*Sunday, April 11, 2010 at 10:48am by Charlie*

**Physics**

Well, if you found the answer to the first and second question, you should be able to figure that out via the kinematics equations esp if you got the height question
*Sunday, February 22, 2009 at 8:55pm by Chopsticks*

**Physics, Kinematics**

Nevermind, you just accidentally switched the velocity and time. It's (1/2)(15.1+25.8)*(28.7) and (1/2)(25.8)*37.1. Thank you so much for your help! I can't believe I didn't see that before.
*Thursday, December 1, 2011 at 8:06pm by Jackie*

**Physics 12 Kinematics**

Bullets horizontal displacement is Dx = (VoCos0)((VoSin0/9.8m/s^2x)2) I'm not sure how to fund the y position of the byllet is exactly the original height of the monkey - how fat it fell..?
*Friday, November 8, 2013 at 8:47pm by Oscar*

**Physics**

Use the kinematics equation: Vf= Vi+at (where a is acceleration due to gravity: -9.8) Then simply plug in.... Vf=(0.50)+(-9.8)*(0.70) Vf= -6.36 m/s
*Tuesday, February 2, 2010 at 4:17pm by Veronica *

**Physics**

The equation of kinematics for an object under freefall from rest: h = v0 t + (1/2)at² initial velocity, v0 = 0 m/s acceleration, a m/s/s height dropped, h m time to drop, t seconds Solve for a.
*Sunday, September 27, 2009 at 1:14pm by MathMate*

**Physics (Kinematics)**

A ball is thrown 83.3 m upward and then falls back to earth.Neglecting air resistance, how long will it be in the air? The acceleration of gravity is 9.8 m/s2 . Answer in units of s
*Saturday, October 6, 2012 at 2:32am by Joy*

**physics**

never mind. i got it. u would find the acceleration to find velocity of the ball coming out of the water and then, use kinematics to find the height.
*Thursday, December 3, 2009 at 7:59pm by Anonymous*

**Physics kinematics**

the general "hang time" of a punt is measured to be 4.5sec. if the ball was kicked @ an angle of 63deg. above the horizontal & was caught @ the same level from which it was kicked, what was its initial speed?
*Thursday, March 13, 2008 at 10:17pm by Lisa*

**Physics**

If a lever has a mechanical advantage of 6, and the distance from the fulcrum to the load is .05m, how far is it from the fulcrum to the effort? I think I'm supposed to use some sort of kinematics formula, but I'm really confused.
*Saturday, September 27, 2008 at 10:54pm by Hannah*

**Physics**

Use Equations of Kinematics u = initial velocity = 0 S = distance travelled in metres t = time in seconds g = acceleration due to gravity = -9.81 m/s² S = ut + (1/2)gt² Solve for S.
*Saturday, October 23, 2010 at 10:39pm by MathMate*

**Physics (Kinematics)**

An airplane accelerates down a runway at 100 m/s2 for 15 s until it finally lifts off the ground. Determine the distance traveled before take-off.
*Tuesday, August 13, 2013 at 7:46am by Ashley*

**Physics**

Rearrange the following kinematics equation for the variable iondicated: a)d=v1t+1/2at^2 i)v1 ii)a b)d=v2t-1/2at^2 i)v2 ii)a
*Wednesday, September 19, 2007 at 9:10pm by Katie*

**kinematics**

A projectile is launched with an initial velocity of 25 m/s at a launch angle of 36 degrees. What is the magnitude of the projectile’s velocity when it is 7.5 m above the ground?
*Monday, February 6, 2012 at 3:07pm by Cody*

**Kinematics Physics**

Please let me know if someone can help with this subject. I have summer school in physics because I did not get the first semester. I am still not getting it. Alyx Yes, we can help you. Post your questions, show your work, and we'll guide you in the right direction.
*Saturday, July 29, 2006 at 4:31pm by Alyx*

**physics**

if the angular quantities theta omega and angular acceleration were specified in terms of degrees rather than radians how would the kinematics equations for uniformly accelerated rotational motion have to be altered
*Monday, February 28, 2011 at 9:03pm by luna*

**physics**

if the angular quantities theta omega and angular acceleration were specified in terms of degrees rather than radians how would the kinematics equations for uniformly accelerated rotational motion have to be altered
*Monday, February 28, 2011 at 9:03pm by luna*

**Physics**

A 400 kg baby grand piano is raised to the roof of a 100 m building. If the cable breaks as it reaches this height, what will its velocity be the instant prior to impact? Use energy considerations and verify using kinematics.
*Saturday, December 8, 2012 at 1:08pm by BA*

**two dimensional kinematics**

If you can throw a stone straight up to a height of 16m, how far could you throw it horizontally over level ground? Assume the same throwing speed and opitimum launch angle.
*Monday, October 8, 2012 at 1:41am by ringo*

**Physics**

Kinematics Equations: Vx1 = Vx0 + axΔt (Vx1)^2 = (Vx0)^2 + 2axΔx Δx = Vx0Δt + ½ ax(Δt^2) Had the distance from the intersection when braking begins not been given: Remaining distance = 140.0 m Current Velocity = 14.8 m/s Reaction time = 0.440 s Find ...
*Wednesday, October 6, 2010 at 3:10pm by Steven*

**Please help me with M1 kinematics! **

A particle p is initially at the point (2, 6) in relation to an origin O, and is moving with velocity (3i + j) m/s. It has a constant acceleration (16i + 24j)m/s^2. Show that after 2 seconds it is moving directly away from O and find its speed at that time
*Sunday, February 26, 2012 at 3:39am by Jat*

**physics**

The jumper has to raise his center of mass to the height of 2.4, i.e. to move it by the distance of 2.4 -1.1 =1.3 m From kinematics h =Vo•t-g•t^2/2, 0=Vo –gt Vo=sqrt(2•g•h) =sqrt (2•9.8•1.3) =5.05 m/s
*Saturday, March 24, 2012 at 9:47pm by Elena*

**physics**

double u (dot) classconnect (dot) ca / Documents / SPH4U0 / Kinematics%20 Review % 20 Questions (dot) pdf add the periods instead of dots. contains the solution
*Friday, February 18, 2011 at 1:29pm by Anonymous*

**physics- Kinematics-Conversions**

Preform the following conversions. 1)27 ft. is how many cm? 2)10 stone/day is how many lbs/min? 3)53 pits/hr is how many steps/day? if someone could even explain how to do it i'd be really greatful thanks !
*Sunday, June 10, 2012 at 7:04pm by yasmeen*

**Physics (Kinematics)**

v=v₀+at a=(v-v₀)/t = … s= v₀t + at²/2=...
*Tuesday, August 13, 2013 at 7:44am by Elena*

**Physics**

These are problems in ballistics. Nowadays they call them kinematics problems. Vox is the horizintal component of the the velcoity. In order to comupte it, you need to know the speed that the cannonball leaves the cannon. We will be glad to critique your work, but, if you are ...
*Monday, February 8, 2010 at 7:01pm by drwls*

**calc-kinematics**

Did you have your calculator set to radians ? I get t = arcsin(1/4) = 1.318116 then v(1.318116) = 4sin(1.318116) - 1.318116 = 2.55486 close to one of the choices, (they should have rounded to 2.56)
*Tuesday, March 30, 2010 at 12:56am by Reiny*

**physics- kinematics**

Negative value for what? Normally, I make upwards positive. g will be negative (downwards) initial velocity is positive (upwards).
*Thursday, October 2, 2008 at 1:38pm by bobpursley*

**Please help me with M1 kinematics! **

A particle is travelling with velocity (4i+5j)m/s. It undergoes an acceleration of magnitude 2.5m/s^2 in a direction given by the vector (3i-4j). Find the velocity and displacement of the particle from its initial position after 4s.
*Sunday, February 26, 2012 at 5:41am by Jat*

**Physics Kinematics**

A short-putter throws the shot with an initial speed of 16 m/s at a 32.0 degree angle to the horizontal. Question: Calculate the horizontal distance traveled by the shot if it leaves the athletes hand at a height of 2.05 m above the ground?
*Sunday, June 10, 2012 at 3:50pm by Tim Duncan*

**Physics**

Acceleration of the object from kinematics is a=2•s/t^2=2•85/(2/3)^2=32.14 m/s^2 Acceleration of this object without friction fron Newton's 2 Law is a=g•sinα=9.8•0.656=6.43 m/s^2 Therefore, it may be mistake in the given data Check the data!
*Saturday, March 24, 2012 at 3:14pm by Elena*

**Grade 11th Physics kinematics**

an aeroplane takes of at an angle of 45deg to the horizontal. If the vertical component of its velocity is 300kmph, Calculate its actual velocity. what is the horizontal component of it velocity?
*Friday, July 9, 2010 at 4:05pm by shruthi*

**11th matriculation physics kinematics**

an aeroplane takes of at an angle of 45deg to the horizontal. If the vertical component of its velocity is 300kmph, Calculate its actual velocity. what is the horizontal component of it velocity?
*Sunday, July 18, 2010 at 11:34am by shruthi*

**Physics**

A pinball machine has a spring with spring constant of 125N/m. A 65g ball is placed on the spring and the spring is compressed 5cm. How far along the playing surface makes a 15 degrees angle with the horizontal? ignore friction. How to do this using Energies and Work done? No ...
*Monday, April 15, 2013 at 5:37pm by Sash*

**Physics 12 Kinematics**

If there was no gravity, the monkey would not fall, nor the bullet fall from its path. But gravity exists, and both fall from the tree, and the straight line path, at the same rate.
*Friday, November 8, 2013 at 8:47pm by bobpursley*

**Kinematics. Newtons Laws**

Two objects are in contact on a frictionless surface. A horizontal force is applied to one object as shown in the figure below. Use m1 = 1.2 g, m2 = 254 g and F = 0.7 N to find the force between the two objects.
*Tuesday, October 6, 2009 at 9:41am by Natasha*

**Physics**

This question has to do with kinematics graphing. I CAN NOT REPRODUCE THE GRAPH BUT hope that some help can be given to me with this question. The position versus time for a certain object moving along the x-axis. The object's initial position is -2 m. Find the instantaneous ...
*Wednesday, September 4, 2013 at 8:47pm by Deawn*

**physics - uniform circular motion**

Explain why the kinematics equations which describe the motion of the object that has constant acceleration cannot be applied to uniform circular motion.
*Monday, August 23, 2010 at 10:16am by Shaila*

**Please help me with M1 kinematics!**

oh, speed at t = 2 we got u = 35 and v = 49 speed = sqrt (35^2 + 49^2)
*Sunday, February 26, 2012 at 3:39am by Damon*

**physics**

A 1.31 g samara -- the winged fruit of a maple tree -- falls toward the ground with a constant speed of 1.0 m/s (Figure 5-29). I understand that acceleration equals zero, but I dont understand how to find the upward force need to keep the fruit at 1.0 m/s. Is kinematics ...
*Friday, February 5, 2010 at 8:47pm by Ryan*

**physics- kinematics**

General question- when do you use NEGATIVE for 9.8m/s^2? Even when the questions says "an object is thrown up in the air from top of the building, on its way down, it misses the building and falls to the ground below." If you do use a negative value, why is that?
*Thursday, October 2, 2008 at 1:38pm by ella*

**kinematics**

A man stands on a slope of 20 degrees.His weight is 65kg. Given that the coefficient of static friction is 1.5, Calculate the maximum angle that the slope can have to the horizontal before he begins to slide. Also how does the pressure on his feet change with the changing ...
*Thursday, March 8, 2012 at 4:10am by dmkp*

**physics all the time**

IT can be done by finding the x displacement each .1 second, and the y displacement each .1 second. You have equations for displacement in x, and y. These are rather elementary kinematics problems, if you are failing to understand the concepts, maybe you need not to take ...
*Saturday, September 22, 2007 at 1:11pm by bobpursley*

**Kinematics. Newtons Laws**

Let f be the force between them, pushing on each other. F - f = m1*a f = m2*a Ypu have two unknowns (a and f) and two equations. Add the equations to get rid of f. F = (m1 +m2)a Now solve for f
*Tuesday, October 6, 2009 at 9:41am by drwls*

**Physics**

This is a two-dimensional kinematics question: A particle's position coordinates (x,y) are (2m, 3m) at t=0; (6m, 7m) at t=2s, and (13m, 14m) at t=5s. Find the average velocity vector between t=0s and a) t=2s, b) t=5s. I don't know how to find this without acceleration being ...
*Friday, September 10, 2010 at 7:16pm by Anonymous*