Number of results: 50,907
A bicycle travels 3.2 km due east in 0.10 h, then 5.6 km at 15.0° east of north in 0.11 h, and finally another 3.2 km due east in 0.10 h to reach its destination. The time lost in turning is negligible. What is the average velocity for the entire trip? i need to find the ...
Friday, September 14, 2007 at 1:54am by bob
A runner times his speed around a circular track with a circumference of 0.508 mi. At the start he is running toward the east and the track starts bending toward the north. If he goes halfway around, he will be running toward the west. He finds that he has run a distance of 0....
Friday, September 14, 2007 at 1:56am by bob
average velocity=(velocityfinal -velocityinitial)/2 velocity final= .678/4 *direction of final run what is the final direction? Well , he has ran .678mi, which is .678/.508 revolutions, or 1 and a third rev, or a final angle of 120 deg. He is sruning at a 90 degree angle to ...
Friday, September 14, 2007 at 1:56am by bobpursley
HEATHER AND MAT WALK WITH AN AVERAGE VELOCITY OF 0.98 M/S EASTWARD. IF IT TAKES THEM 34 MIN TO WALK TO THE STORE, WHAT IS THEIR DISPLACEMENT?
Wednesday, September 26, 2007 at 8:06pm by DAISY
displacement = (average velocity) (time) The direction will be East. Make sure the time is in seconds, since the velocity is in m/s. 34 minutes = 2040 seconds
Wednesday, September 26, 2007 at 8:06pm by drwls
For a given launch velocity, it takes 6 times as long for the object to reach maximum height on the moon, and that height will be six times higher. (ascent time) = (Initial velocity)/(deceleration rate) max height = (average velocity) x (ascent time)
Monday, October 1, 2007 at 7:31am by drwls
All I can guess is that this is a object starting from rest, ending at time t. You want to know the average velocity during that time, which is equal to 1/2 the final velocity avg velocity= (vf +Vi)/2 = (Vf+0)/2 = 1/2 g t
Sunday, October 14, 2007 at 4:54pm by bobpursley
on the fourth: comentum is conserved, final momentum is = initial momentum. on the last: vf^2=vi^2+force*distance where distance is average velocity*time or (vf+vi)/2 * t solve for force first two correct.
Monday, October 15, 2007 at 9:32pm by bobpursley
I am given a velocity versus time graph for a runner. For it, I had to figure out the average velocity for the entire 16 s interval (for this, I got 2 m/s). Now they want me to find the displacement of the runner in the first 15.4 s. I know that it must be somewhere around 30...
Tuesday, October 16, 2007 at 4:30pm by Lindsay
The earth moves around the sun in a nearly circular orbit of radius 1.50*10^11m. During the three summer months (an elapsed time of 7.89*10^6s), the earth moves one-fourth of the distance around the sun. (a)what is the average speed of the earth? (b) what is the magnitude of ...
Sunday, October 21, 2007 at 4:51pm by ajo
If two molecules have the same temperature does it affect their average velocity depending on how heavy the molecules are or not?
Tuesday, October 23, 2007 at 11:26pm by Ana
The average velocity of the ball between first contact with the glove and when it stops is 25/2 = 12.5 m/s. The time that the ball is decelerated is T = D/12.5 m/s, where d is the distance that the glove moves backwards. The average force is given by the momentum law (avg. ...
Thursday, October 25, 2007 at 12:14am by drwls
1. Music Mart sells an average of 150 cassette tapes daily at $10.00 a tape. If 15 sales are lost for each $0.50 increase in unit price, what price will maximize profits? What will be the resulting daily profit? A few punches on the calculator will quickly expose the answer. ...
Thursday, October 25, 2007 at 2:31pm by tchrwill
Calculate the speed V = sqrt (2gH) of the egg when it hits the pad. I get 15.3 m/s. Multiply that by the mass M to get the momentum, MV = 0.856 kg m/s. The average upward force on the egg, Fav, multiplied by the time to bring it to a stop (6.25*10^-3 s) equals the momentum. ...
Sunday, October 28, 2007 at 1:22pm by drwls
which ranks the gases in order of increasing average velocity? H2<O2<Cl2<Xe Xe<Cl2<O2<H2 O2=Cl2=H2<Xe
Thursday, November 1, 2007 at 10:14pm by Avonlea
How can seperate 1L samples of O2 and H2 have the same average velocity/
Friday, November 16, 2007 at 2:17pm by mel
The kinetic energy of gaseous molecules is proportional to the temperature. At the same temperature, the kinetic energy is the same for any gas. K.E. = 1/2 mv2. Therefore, at the same T, the average velocity of the lighter molecules will be higher, the heavier molecules will ...
Friday, November 16, 2007 at 2:17pm by DrBob222
I don't quite understand the grammar of your question. The downstream average velocity of the wind is reduced by the presence of windmmills, if that it what you mean. That is becasue the air must lose kinetic energy to produce useful electrical energy.
Sunday, November 18, 2007 at 12:38am by drwls
physics!! plz answer me!
Use the impulse-momentum wethod to answer this question. The impulse is the average force Fav, multipled bu the tme that it is applied (which is the time it takes to decelerate the ball). |Fav| * T = 0.15 kg * 26 m/s We only need the absolute value of the force, so never mind ...
Monday, December 10, 2007 at 9:48pm by drwls
Can someone check my answers for the following questions. Thanks you. 1)A hockey puck's average velocity is 22 m/s. What is its displacement after 6.0s? Answer: 132 m 2)It is 0.30 seconds after seeing a puff of smoke rise from the starter's pistol; the sound of firing the ...
Saturday, January 5, 2008 at 11:03pm by Amy