Number of results: 87
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
During an elbow flexion exercise, the relative angle at the elbow is 22 degrees at .3s and 155 degress at .62s. What is the angular velocity of the elbow?
Wednesday, November 4, 2009 at 8:34pm by anonymous
An individual is running around a turn with an 11-m radius at 3.75 m/s. What is the runner's centripetal (radial) acceleration?
Wednesday, November 4, 2009 at 8:48pm by tina
If a kicker produces a torque of 8Nm with her muscles and the resulting angular acceleration of her leg is 20rad/m2, what is the moment of inertia of her leg?
Tuesday, April 6, 2010 at 7:28pm by Jane
A pitched ball with a mass of 1 kg reaches a catcher's glove traveling at a velocity of 28 m/s. How much momentum does the ball have? how much impulse is required to stop the ball? If the ball is in contact with the catcher's glove for 0.5 s during the catch, how much average ...
Sunday, November 21, 2010 at 1:39pm by Walter
If an average net force of 20N at 45* is applied to a 0.35 kg water balloon for 0.12s. how far away should the catcher stand? Assume release height and cathc height are the same and air resistance is not a factor.
Monday, November 29, 2010 at 12:03am by Bob
The NCAA requires that a basketball dropped from a height of 1.83 m (measured to the bottom of the ball) bounce to a height of 1.24 to 1.37 m (measured to the top of the ball). Assuming the diameter of a typical basketball is 0.25 m, calculate the allowable range of ...
Sunday, December 5, 2010 at 8:26pm by jhkh
A weightlifter performing a curl with a 320 N barbell stops the lifting motion with his forearms in a horizontal position. (a) If the line of action of the weight of the barbell is 27 cm from the axis of rotation (elbow joint), what is the magnitude of the moment that the ...
Sunday, December 5, 2010 at 8:45pm by jim
If John was pushing a 300 kg desk across the floor with a constant acceleration of 3.5 m/s squared, how much force would he have to apply to the desk to maintain the acceleration, considering the coefficient of kinetic friction is 0.60?
Thursday, February 17, 2011 at 4:17pm by Jennifer
If a soccor ball with a mass of 0.43 kg is kicked while it is in the air, with a force of 15 N oriented 32 degrees above the horizontal, what is the resultant acceleration?
Friday, April 8, 2011 at 12:38pm by katie
F = m a The acceleration component due to the kick, a, will be in the direction of the force, F. Strictly speaking, you must add the acceleration of gravity, g (directed downwards) to that. The correct answer is the vector sum of F/m = (34.9 m/s^2 @32 degrees up) and g (9.8 m...
Friday, April 8, 2011 at 12:38pm by drwls
How do you compute the additional work done after a stretch-chorten cycle?
Friday, August 5, 2011 at 12:56pm by Leah
What does "chorten" mean? Any additional work depends upon what is done.
Friday, August 5, 2011 at 12:56pm by drwls
XY coordinates of the right toe of a soccer kick performer are Frame 20: (2.62, 0.99) Frame 14: (2,34, 0.16). How far did the toe travel in the upward direction between frames 14 and 20? How fast did the toe travel in upward direction between frames 14 and 20? How fast did the...
Saturday, October 8, 2011 at 2:07pm by Esther
A pitched ball with a mass of 1 kg reaches a catcher's glove traveling at a velocity of 28 m/s. If the ball is in contact with the catcher's glove for 0.5 s during the catch, how much average force is applied by the glove? 56 A pitched ball with a mass of 1 kg reaches a ...
Sunday, November 21, 2010 at 1:39pm by MTV
briefly explain how an athlete competing in the long jump can prevent the trunk from pitching forward after take-off
Wednesday, November 30, 2011 at 1:22pm by Lauren
At the beginning of a race, a yacht crosses the start line and sails in westerly direction at a speed of 4 m s-1. The current of the sea is flowing at 2 m s-1 towards the north-east. Calculate how far [8 marks] and in what direction (relative to west) [8 marks] the yacht has ...
Thursday, February 9, 2012 at 5:12pm by alex
4m/s @ 180 Deg + 2m/s @ 45 Deg. X = 4*cos180 + 2*cos45 = -2.586 m/s. Y = 0 + 2*sin45 = 1.414 m/s. tanAr=Y/X = 1.414 / -2.586 = -.054687, Ar = -28.7 Deg. = Reference angle. A=-28.7 + 180=151.3 Deg.,CCW= W28.7Deg N. V = X/cosA = -2.586 / cos151.3 = 2.95 m/s @ W28.7Deg.N. d = 2....
Thursday, February 9, 2012 at 5:12pm by Henry
Basic Biomechanics. No kidding.
Friday, September 27, 2013 at 7:57pm by bobpursley
This looks more like economics than biomechanics. http://en.wikipedia.org/wiki/Biomechanics
Sunday, September 29, 2013 at 10:51am by Ms. Sue