Search: physics-speed

Number of results: 100,405

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

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

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
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

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
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

physics
if a plane is flying at a speed so that the apex half-angle of its shock wave is 30 degrees, what is the speed if the speed of sound is 320 m/s?
Friday, May 13, 2011 at 4:55pm by Cam

physics
The speed of the fish at water is a vector combination of the intial horizontal speed, and the terminal vertical speed. I will be happy to check your work.
Monday, January 10, 2011 at 2:45pm by bobpursley

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

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

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

physics
a girl of mass 40 kg is skating at a constant speed of 1 m/s. supposed she doubles her speed, how much work will be needed to double her speed?
Monday, January 7, 2013 at 7:06am by merlyn

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 ...
Wednesday, September 26, 2007 at 2:31pm by Tammy

Physics
The cruising speed in this case is the speed attained after the 1 min of acceleration. Call it V. The average speed during accleration is V/2. (V/2)*(60 s) = 1350 m V = 45 m/s
Friday, September 7, 2007 at 12:29am by drwls

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
A cart has a constant acceleration of a = 2m/s2. At a certain instant its speed is 5 m/s. What is its speed 2 s later and 2 s earlier?. What is its average speed during the time interval of 4s.?
Sunday, October 3, 2010 at 4:22pm by Jay

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

physics
A pick up truck travelling at constant speed begins to accelerate at 1.5m/s squared for 6 seconds, by which times it has reached a speed of 20m/s. What was its original speed?
Monday, February 25, 2013 at 12:03pm by Poppy Proasheck

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
If a projectile is launched from Earth with a speed equal to the escape speed, how high above the Earth's surface is it when its speed is three-fifths the escape speed? I keep getting the answer 2.56x10^6 m after solving it a few different ways. Help would be great.
Saturday, April 28, 2012 at 6:24pm by Kristin

physics
wave speed=859/40 seats/second Width=speed*timestanding I am wondering what this is doing with the title physics, it is basic high school math.
Thursday, April 30, 2009 at 3:44am by bobpursley

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
The wire length is one half wavelength wave speed is proportional to the square root of tension, so wave speed is doubled here. f*lambda=speed, so if lambda is constant, speed doubled, f must...
Sunday, December 12, 2010 at 3:19pm by bobpursley

Physics
Can anyone please help me with this question? I don't understand why the speed is v m/s. A sport utility vehicle is travelling at a speed of v m/s. If its momentum has a magnitude of 32,800 kg·m/s, what is the SUV's mass? Thanks I know that I have to use the ...
Thursday, May 2, 2013 at 11:39pm by Kathy

physics
initial speed: 2 m/s a: -9.8 m/s^2 s: -2.5 m final speed: ? Vf^2 - Vi^2 = 2as v^2 - 2^2 = 2•-9.8•-2.5 v^2-4 = 49 v^2 = 53 final speed is approx. 7.28
Sunday, November 18, 2012 at 9:58pm by Anonymous

Physics
A ball is thrown horizontally from a height of 19.17 m and hits the ground with a speed that is 4.0 times its initial speed. What was the initial speed?
Sunday, September 18, 2011 at 12:32pm by Alexandria

physics
suppose a treadmill has an average acceleration of 4.7 x 10^-3 m/s^2. a. how much does its speed change after 5.0 min? b. if the treadmill's initial speed is 1.7 m/s, what will its final speed be?
Friday, September 3, 2010 at 12:52am by Ally

physics
Use the formula for speed and that is speed=distance/time 27cm/10sec 2.7cm/sec Therefore we know that the speed of the bee is 2.7cm per second
Tuesday, June 1, 2010 at 10:12am by Vince

College Physics
a horizontal speed of 15.8 m/s and a vertical speed 10.0 m/s upward. What is the vertical speed 1.12 s later?
Sunday, September 26, 2010 at 3:22pm by J

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

Physics
I'm not sure how to do this problem A .40 kg ball is thrown with a speed of 10 s^-1 m at an angle of 30 degrees. (a) What is its speed at its highest point, and (b) how high doe it go? (Use conservation of energy.)
Thursday, September 24, 2009 at 9:20am by Physics

physics
They are not asking you to graph the collision. All you need to do is apply a momentum conservation formula to compute a final speed. The final speed is half the initial speed of the moving car.
Monday, January 25, 2010 at 1:47am by drwls

physics
An airplane travels 2800 km at a speed of 700 km/h, decreases its speed to 500 km/h for the next 1500 km and travels the last 1000 km at a speed of 400 km/hr. Find the average speed of the plane for the trip.
Tuesday, September 13, 2011 at 7:14pm by nikita

physics
You have the initial vertical speed, the horizontal speed will be given by the law of conservation of momentum. In the horizontal... massball*speedball=(massball+massplayer)Vfh solve for the Vfh (final horizontal speed of the ball in the glove) Now add vectors horizontal speed...
Sunday, December 16, 2007 at 12:07pm by bobpursley

Physics 2
You need to get a basic math tutor immediately, or drop physics. The language of physics is math, and you are operating at an algebra I level, at best. You will not succeed. speed-1.8=30/11 speed= 30/11 + 1.8= 4.5m/s Physics comprehension will demand much higher levels of ...
Friday, February 19, 2010 at 12:21am by bobpursley

Physics HELP!
Add the vectors. The air speed and wind speed are perpendicular. The resultant speed is the hypotenuse of the vector right triangle. Draw the triangle and you will see that the hypotenuse is in the direction of the resultant velocity. Are you sure about the 22 m/s airplane ...
Friday, June 11, 2010 at 12:22am by drwls

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

physics
The acceleration due to gravity near a planet's surface is known to be 3.20 . Part A If the escape speed from the planet is 9.54 , determine its radius. Part B Find the mass of the planet. Part C If a probe is launched from its surface with a speed twice the escape speed ...
Saturday, September 29, 2012 at 8:01pm by sammy

Physics
When you approach a blinking source of light, the frequency of its blinking is seen to: decrease, increase, or remain the same always. I THINK IT IS INCREASING. If you are traveling at close to the speed of light and shine a flashlight out in front of you, a third observer at ...
Saturday, May 3, 2008 at 2:52pm by clark

physics
change of speed=(final speed-initial speed) = (14+2.3*(12.2-9) - 14)=2.3*3.2 m/s
Tuesday, September 6, 2011 at 9:36am by bobpursley

PHYSICS
A baseball is hit with a horizontal speed of 16 m/s and a vertical speed of 16 m/s upward. What are these speeds 5 s later? horizontal speed ?? m/s vertical speed ?? m/s
Saturday, March 8, 2008 at 12:37am by jena

Physics
After 3 seconds she will have increased her speed by 3.9 m/s, attaining 3.9 + 2.2 = 6.1 m/s speed IF she was skating in a straight line. Since 6.1 m/s IS her final speed, she was skating along the initial velocity direction The answer is zero degrees.
Thursday, January 15, 2009 at 8:25pm by drwls

physics
Oh okay, thank you. The only thing included was a graph giving the points t=0s, speed= 0cm per second; t= .5s, speed= 15cm per second; t=1.1s, speed =28cm per second; t=1.6s, speed=6cm per second.
Sunday, October 10, 2010 at 12:30am by Amber

Physics
A 96kg soul ascended to heaven at a speed of 12m/s, when he bumps against a 50 kg soul descending to hell at the speed of 15m/s, assuming that soul number 2 has an initial speed of 1m/s, find the initial speed of soul number 1.
Sunday, January 2, 2011 at 9:49am by DAnielle

Physics
When would instantaneous speed be the same as average speed? would it be when the speed is constant? when the position changes linearly with time or would it be in the limit when the time interval goes to zero? I thought it would be when the speed is constant, but i'm not ...
Monday, September 5, 2011 at 12:59pm by Katie

physics
starting from reast a boat increases its speed to 4.12 m/s with constant acceleration. (a) what is the boat's average speed? (b) If it take the boat 4.77s to reach this speed, how for has it traveled?
Thursday, November 17, 2011 at 5:35pm by taylor

physics
wind speed + plane speed= speed over ground 82S+375@direction=speed W so, 375@direction= W-82S=W+82N 375SinTheta N+ 375CosThetw W is what you want. 82=375 sinTheta solve for Theta. That is the direction N of W. Speed over ground? 375CosTheta.
Tuesday, February 2, 2010 at 11:37pm by bobpursley

Physics (Momentum)
Can anyone please help me with this question? I don't understand why the speed is v m/s. A sport utility vehicle is travelling at a speed of v m/s. If its momentum has a magnitude of 32,800 kg·m/s, what is the SUV's mass? Thanks I know that I have to use the ...
Thursday, May 2, 2013 at 10:26pm by Kathy

Physics
A ball is thrown horizontally from the roof of a building 9.0 m tall and lands 8.5 m from the base. What was the ball's intial speed? I have no idea how to do this problemm or what formulas to use because of the fact that I do not know the time interval it took to fall. ...
Sunday, July 5, 2009 at 5:38pm by Physics

physics
Starting from rest, a boat increases its speed to 4.92 m/s with constant acceleration. (a) What is the boat's average speed? (b) If it takes the boat 5.07 s to reach this speed, how far has it traveled?
Wednesday, August 29, 2012 at 9:16pm by stoic-rider77

Physics
Speed of a satellite orbit (physics problem)? What is the speed of a satellite in a geosynchronous orbit about Earth? _________m/s Compare it with the speed of the Earth as it orbits the Sun. _________m/s
Friday, June 29, 2012 at 2:40pm by Sierra

physics
Set a frictionless incline at various measured angles then determine the acceleration of a block by measuring the time it takes to increase from an initial speed to a final speed.If the angle is 20 and the initial speed is 0.68m/s and final speed is 2.43m/s and the time is 0....
Sunday, November 21, 2010 at 4:00pm by Trista

Physics
You neglected to say what your length and speed dimensions are. That is a serious error in physics. They are probably either feet or meters. If it reaches a speed of 1610 (m/s?)in 1.80 s, its average speed during that interval is 805 m/s. Multiply 805 m/s by the time interval...
Tuesday, October 7, 2008 at 10:58pm by drwls

physics
A race car enters a flat 200 m radius curve at a speed of 20 m/swhile increasing its speed at a constant 2 m/s2. If thecoefficient of static friction is .700, what will the speed of thecar be when the car beings to slide?
Thursday, October 13, 2011 at 5:54pm by holt

Physics
Your diameter and speed require dimensions. Numbers are not enough. Your question can be answered by using the continuity and Bernoulli equations. speed * area = constant P + (1/2)*(density)*(speed)^2 = constant Show your work for further assistance, if needed.
Sunday, April 24, 2011 at 11:19pm by drwls

physics
Tangential speed is given. angular speed= tangential speed/radius.
Monday, October 22, 2007 at 12:30pm by bobpursley

Physics
(b)A coin is placed 20 cm from the axis of a rotating turntable of variable speed. This speed is gradually increased and the coin remains fixed on the turntable until a rate of 36 rpm is reached. At this point, the coin slides off. What is the coefficient of static friction ...
Monday, July 26, 2010 at 3:07pm by Physics

physics
They have provided more information than you need to answer the question. That is to done to give you practice in knowing what to use and what to ignore. The average speed is 2/1.5 = 4/3 m/s. The final speed is twice that, or 8/3 m/s The acceleration is the final speed divided...
Wednesday, September 15, 2010 at 10:57pm by drwls

Physics
1) change speed to m/s 61.1m/s check that. avgspeed=(vf+vi)/2=30.5m/s distance=avgspeed*time I get considerably more than you Remember, under constant deaccleration to a stop, the average speed is 1/2 the initial speed.
Saturday, January 10, 2009 at 1:33pm by bobpursley

Physics- HELP
How to find average speed with a given initial speed, theta, and delta x? I know average speed= total distance/total time, but I am given an initial speed, an angle and delta x. Mark throws a ball to Daniel with an initial speed of 20 m/s at an angle of 45 degrees. If they are...
Wednesday, December 1, 2010 at 7:26pm by Amm

physics
He leaves the slide at horizontal speed V and keeps that horizontal speed V for 5 meters and .5 seconds. From that we can get speed V, because distance = speed times time. Now if you know about conservation of energy and this slide is very slippery indeed we can say is kineic ...
Tuesday, December 11, 2007 at 7:20pm by Damon

physics
Think about it. The speed of the gears' boundaries must match. Since A has a larger radius, it turns more slowly in rpm. So, if A is 6Hz ccw, B is 12Hz cw. The linear speed must match,or the teeth will strip! A's speed is 2π(10)*6 = 120πcm/s B's ...
Monday, October 3, 2011 at 1:21am by Steve

physics
a boy walks to a school at a rate of 6km with a speed of 2.5km/h and walks back with a constant speed of 5km/h. his average speed for round trip in km/h is ?
Saturday, June 25, 2011 at 11:16am by aleeza

physical
I have no idea what does this have to do with physics but hope you can explain... A passenger on a bus moving east sees a man standing on a curb. From the passenger's perspective, the man appears to be... a)stand still. b) move west at a speed that is less than the bus'...
Saturday, October 30, 2010 at 3:49am by Aisumi

physics
The CM moves diagonally NE at a speed that is the individual car speed multiplied by sqrt2. The individual car speed is therefore 51*0.707 = 36 km/h
Tuesday, November 8, 2011 at 9:15am by drwls

physics
If a race car completes a 3 mi oval track in 50 s, what is its average speed? Did the car accelerate? 1. Yes, the speed changed. 2. No, the speed didn’t change. 3. Yes, the direction of the motion changed.
Sunday, September 25, 2011 at 10:31am by anon

physics
The speed of an automobile increases from 11 m/s to a speed of 47 m/s over a time period of 9.0 seconds. What is the average rate at which the speed of this car is changing during this time period?
Friday, September 2, 2011 at 11:03am by Anonymous

physics
If a runner travels at a speed of 10 m/s for 5 seconds, stops for a short time then continues on at a speed of 8 m/s for 4 seconds. How long was the runner stopped for if his average speed at the end of the trip is 4 m/s.
Tuesday, February 22, 2011 at 10:25pm by mikey

physics
The frequency does not change. There is no waiting line. As many pulses per second travel on both sides of the boundary. The speed does change. wavelength = speed * period = speed /frequency
Friday, March 27, 2009 at 3:10pm by Damon

Physics
average speed= .35rev/s so in 2.9 seconds, it goes... b) well, when it is half done, 2.9/2 seconds has elapsed. average speed= (.7+.35)/2 rev= avg speed*2.9/2 revs.
Wednesday, November 17, 2010 at 8:47pm by bobpursley

Physics - still confused -Please help
The velocity of pulling in the line is is V = w * R , which means Linear speed = (Angular speed)*(Radius) = 2.1m/9.7s = 0.2165 m/s Angular speed = 0.2165/0.3 = 0.7216 rad/s
Saturday, February 25, 2012 at 10:36am by drwls

physics
If a car completes a 3.8 mi oval track in 69.7 s, what is the average speed? answer in mph Did the car accelerate? (A.yes the direction of the motion changed or B. yes the speed changed or C. no the speed didnt change)
Tuesday, June 14, 2011 at 12:11am by alexa

Physics
A car is driven from point A to B at a constant speed of 25.0 m/s along a straight line, and then back from point B to A at a constant speed of 20.0 m/s. The values of the average speed over the entire trip is?
Tuesday, January 19, 2010 at 6:58pm by Mandy

physics
A ball is thrown horizontally from a height of 18.18 m and hits the ground with a speed that is 4.0 times its initial speed. What was the initial speed?
Monday, October 10, 2011 at 8:18pm by chad

physics
Conservation of momentum requires that: (alpha particle mass)x(alpha particle speed) = (Th234 speed)x (Th234 mass) The speeds are in opposite directions Therefore (Th34 speed)= (alpha speed)*(4/234)
Saturday, January 16, 2010 at 3:57pm by drwls

Physics Please help
I'm still confused. to find angular speed = tnngenital speed/radius, would the radii cancel out, leaving only the tangential speed? still confused as to set up
Saturday, February 25, 2012 at 8:47am by Nilan

college physics
A car is driven from point A to B at a constant speed of 25.0 m/s along a straight line, and then back from point B to A at a constant speed of 20.0 m/s. The values of the average speed over the entire trip is?
Tuesday, January 19, 2010 at 7:20pm by Mandy

physics
Speed at middle of second 5.5 s interval = 3 x (Speed at middle of first 5.5 s interval) = 170/5.5 = 30.91 m/s = (average speed during that interval) Speed at 8.25 s = 3 x speed at 2.75 s. Therefore: speed at 2.75 s = (1/3)*30.91 = 10.30 m/s Distance travelled during first ...
Monday, March 5, 2012 at 3:53pm by drwls

physics
A girl riding a bicycle with a speed of 5m/s towards northdirection , observes rain falling vertically down. If she increases her speed to 10m/s , rain appears to meet her at 45degree tp the vertical .what is the speed of rain ?
Tuesday, August 28, 2012 at 11:15am by manish dagar

Physics
a steel ball drops onto a thick steel plate. its speed just before it hits is 10 m/s and it rebounds with a speed of 9 m/s. what percentage of its kinetic energy did it lose during the collision? what would you expect its speed to be after the second rebound?
Thursday, September 6, 2012 at 7:29pm by Megan

physics
a patrol of timing paths each vehicle needs to travel the first half of the distance at a speed of 140 km / h. if the speed limit is 80km / h. which should be the highest average speed of the car in the second half of the section, to avoid being fined?
Sunday, October 10, 2010 at 12:09am by liz

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
A supersonic jet flying at 137 m/s is accelerated uniformly at the rate of 23.1 m/s2 for 20.0 s. (a) What is its final velocity? (b) The speed of sound in air is 331 m/s. How many times the speed of sound is the plane's final speed?
Tuesday, October 23, 2012 at 9:24pm by miranda

physics
Tarzan swings on a 34.0-m-long vine initially inclined at an angle of 33.0° with the vertical. (a) What is his speed at the bottom of the swing if he starts from rest? m/s (b) What is his speed at the bottom of the swing if he pushes off with a speed of 5.00 m/s? m/s
Wednesday, October 10, 2012 at 11:25pm by monic

Physics
Tarzan swings on a 27.0 m long vine initially inclined at an angle of 33.0° with the vertical. (a) What is his speed at the bottom of the swing if he starts from rest?(b) What is his speed at the bottom of the swing if he pushes off with a speed of 3.00 m/s?
Wednesday, March 10, 2010 at 1:25pm by Kelsey

physics
if a stone at the end of a string is whirled in a circle, the inward pull on the stone A) is known as the centrifugal force B) is inversely proportional to the speed of the object C) is inversely proportional to the square of the speed D) is proportional to the speed E) is ...
Monday, May 28, 2012 at 9:58am by star

science/physics
I do not know. Was this question in your text? It depends how squishy you are.F = m a = rate of change of momentum = m *(change in speed/time to change speed) But time to change speed from zero to speed of the truck depends on howmuch the truck compresses you on contact. If ...
Tuesday, August 9, 2011 at 1:15pm by Damon

physics
A object of mass 3.00 kg is subject to a force Fx that varies with position as in the figure below. Find the work done by the force on the object as it moves as follows: (a) from x = 0 to x = 4.00 m 1 Your response differs from the correct answer by 10% to 100%. J (b) from x...
Tuesday, October 20, 2009 at 8:08pm by fdtc

physics
A cart starts from position 4 (which is 20m above ground) in the figure below with a velocity of 11 m/s to the left. Find the speed with which the cart reaches positions 1, 2, and 3. Neglect friction. speed at position 1 m/s? speed at position 2 m/s? speed at position 3 m/s? ...
Monday, February 27, 2012 at 12:48am by Jacky

Physics
an automobile tire has a radius of 0.350M, and its center forward with a liner speed of v=13.0m/s. (a) Determine the angular speed of the wheel. (Assume that there is no slipping of the surfaces in contact during the rolling motion.) (b) Relative to the axle, what is the ...
Wednesday, March 14, 2007 at 4:00am by CJ

physics
Nuts to the wording. Sonic booms are created when the aircraft is exceeding the speed of sound, for however long the speed exceeds the speed of sound. A is so poorly worded, it is difficult to understand. I would go with B, but your teacher may argue that she meant A to be the...
Sunday, April 29, 2012 at 2:27pm by bobpursley

physics
the earthis moving around the sun in a circular orbit of radius 1.5*10^11. it makes one revolution per year.find the angular speed of earth in radian/sec, and the tangential speed of earth using the formula v=r.w , and tangetial speed ?
Sunday, April 25, 2010 at 10:29pm by mo

physics
Tangential speed = rω Since ω (angular speed) is constant, so the tangential speed is proportional to the radius.
Sunday, October 24, 2010 at 9:00pm by MathMate

physics
A 3 kg toy car with a speed of 10 m/s collides head-on with a 2 kg car traveling in the opposite direction with a speed of 2 m/s. If the cars are locked together after the collision with a speed of 5.20 m/s, how much kinetic energy is lost?
Tuesday, September 18, 2012 at 10:30pm by mk

physics
A 3 kg toy car with a speed of 10 m/s collides head-on with a 2 kg car traveling in the opposite direction with a speed of 3 m/s. If the cars are locked together after the collision with a speed of 4.80 m/s, how much kinetic energy is lost?
Sunday, June 26, 2011 at 9:11pm by Brittany

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