Wednesday

January 18, 2017
Number of results: 93

**Biomechanics/Physics**

A 125 pound female is late for her biomechanics final and after arriving dashes up 40 steps each 15cm high in 1.65 seconds to take a seat and start the test. Hint: 1 lb = 4.47N How much work did she perform running up the steps?

*May 7, 2016 by Frank*

**Science/Math**

A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location? The textbook that included the word problem is: Basic Biomechanics ...

*September 30, 2013 by Walter*

**Science/Math**

Word Problems pages 18-19 A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location? The textbook that included the word problem...

*September 29, 2013 by Walter*

**Science/Math**

John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John? The textbook that included the word problem is: Basic ...

*September 30, 2013 by Walter*

**Science/Math**

Word Problem page 19 John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John? The textbook that included the ...

*September 29, 2013 by Walter*

**Math/Science**

Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S. (Petroleum Special), 30 percent in N (Newshoe), and 10 percent in B & S (...

*September 30, 2013 by Walter*

**Science/Math**

Math Problem page 18 Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S. (Petroleum Special), 30 percent in N (Newshoe), and 10...

*September 29, 2013 by Walter*

**Biomechanics**

A cyclist completes 3.0 revolutions in 1.59s what is the angular velocity?

*March 9, 2013 by Vanitha*

**Biomechanics**

How do you compute the additional work done after a stretch-chorten cycle?

*August 5, 2011 by Leah*

**biomechanics**

Suggest how a snail and a large dog develop linear momentum.

*March 24, 2013 by yaya*

**biomechanics**

Briefly describe the distribution problem and the two techniques used to overcome it.

*November 14, 2012 by dmkp*

**Biomechanics**

Flexion of the elbow and supination of the forearm occur about what axes respectively?

*March 22, 2014 by Evelyn*

**Biomechanics**

Flexion of the elbow and supination of the forearm occur about what axes respectively?

*March 23, 2014 by Evelyn*

**biomechanics**

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?

*November 4, 2009 by tina*

**Biomechanics**

What will be the vertical velocity at take off for a high jumper in order for them to clear a height of 2m?

*July 31, 2013 by Natalie*

**Biomechanics**

An athlete jumps straight upwards at 2.5 m/s, find: 1. a) total flight time 2. b) maximum jump height

*October 28, 2016 by Matt*

**biomechanics**

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?

*April 8, 2011 by katie*

**physics (biomechanics)**

briefly explain how an athlete competing in the long jump can prevent the trunk from pitching forward after take-off

*November 30, 2011 by Lauren*

**biomechanics**

f a 20.8 N horizontal force must be applied to slide a 10.1 kg box along the floor at constant velocity what is the coefficient of sliding friction between the two surfaces?

*May 20, 2012 by Anonymous*

**Biomechanics**

A golfer at the tee swings their driver and completes a downswing in 0.27s through a range of 196.1degree. What is the average angular velocity of the club head

*March 9, 2013 by Vanitha*

**biomechanics**

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?

*April 6, 2010 by Jane*

**Biomechanics**

A cyclist is pedaling on his bicycle. If they travelled 18.1 km in 1.0 hours and the diameter of his wheel is 69.3 cm, what was the cyclist's average angular velocity in revolutions per minute (rpm)?

*September 28, 2015 by Courtney*

**biomechanics**

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?

*November 4, 2009 by anonymous*

**biomechanics**

By actual measurement it has been shown that a sprinter pushes 1700N on each foot at the starting blocks . The right at 34o and the left at 52o Calculate the vertical component for each foot.

*March 23, 2013 by yaya*

**Biomechanics**

A long jumper runs down the runway and it is measured that her vertical velocity is 2.7 m/s and her vertical velocity is 6.6 m/s. what is her angle of takeoff?

*February 2, 2014 by Anonymous*

**biomechanics **

you are trying to lift a 10 kg dumbbell by pulling upward on it with a 108.1 N force. what wil lthe acceleration of the dumbbell be as a result of this force?

*March 14, 2013 by Anonymous*

**biomechanics**

If a 100 kg adult sits on a first class lever 2.3 meters away from the axis of rotation...how far back do I need to sit (145 lbs) on the other side to balance the lever?

*October 23, 2013 by Anonymous*

**Biomechanics**

A volleyball is bumped vertically up to a height of 10 m above the player’s arms. What was the initial velocity of the ball just after leaving the player’s arms?

*August 3, 2016 by anonymous*

**Biomechanics**

A sailboat heads north at 3 m/s for 1 hour and then tracks back to the southeast (at 45 degrees to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location?

*September 27, 2013 by Walter*

**Biomechanics**

jane is a 45 kg cyclist. If her bike weighs 100 N and she landed with her bike on the floor at a vertical reaction force of 890 N, what was her vertical acceleration during landing?

*March 23, 2015 by Anonymous*

**Biomechanics **

Jane is a 45 kg cyclist. If her bike weighs 100 N and she landed with her bike on the floor at a vertical reaction force of 890 N, what was her vertical acceleration during landing?

*March 21, 2016 by Matt*

**biomechanics**

an orienteer runs 300m north and then 400m to the southeast (at a 45 degree angle to north). if he runs at a constant speed, how far away is he from the starting position?

*August 20, 2016 by maryam*

**biomechanics**

an orienteer runs 300m north and then 400m to the southeast (at a 45 degree angle to north). if he runs at a constant speed, how far away is he from the starting position?

*September 3, 2016 by Qurat-ul-Ain *

**Basic Biomechanics**

A sailboat heads north at 3 m/s for 1 hour and then tacks back to the southwest (at 45 degree to north) at 2 m/s for 45 minutes. a. How far has the boat sailed? b. How far is it from its starting location?

*September 29, 2013 by Walter*

**Biomechanics**

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.

*November 29, 2010 by Bob*

**Biomechanics**

A 10 kg block sits motionless on a table in spite of an applied horizontal force of 2 N. What are the magnitudes of the reaction force and friction force acting on the block?

*April 18, 2013 by Jami*

**Biomechanics**

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?

*February 17, 2011 by Jennifer*

**biomechanics**

in a vertical jump and reach test, a 60 kg student jumps 60 cm, while 90 kg student jumps 45 cm. Assuming both jumps took the same amount of time, which jumper was more powerful?

*August 3, 2016 by anonymous*

**biomechanics**

A 50 kg pole vaulter has a horizontal velocity of 8 m/s at the completion of her approach run, and her center of gravity is 1.0 m high. Estimate how high she should be able to vault if her kinetic and potential energies were all converted to potential energy.

*August 3, 2016 by anonymous*

**Biomechanics**

Amy is in a tuck and skiing straight down a 30° slope. Air resistance pushes backward on her with a force of 10 N. The coefficient of dynamic friction between her skis and the snow is 0.08. Amy’s mass is 60 kg. What is the resultant of the external forces that act on Amy?

*October 26, 2015 by Deucalion*

**biomechanics**

During a biceps curl, the elbow's relative angle during flexion changes from 3° to 157°. During an 8 repetition set, what is the total angular distance and displacement at the elbow in degrees and radians?

*June 30, 2014 by travis*

**physics/biomechanics**

1. Once a person is in the air during a jump can they modify their path in the air of: a) their head b) Their whole body centre of gravity c) their hip joint (yes or no) 2. To achieve peak horizontal distance on flat ground, what should the angle of take off be?

*February 7, 2013 by tasneem*

**physics/biomechanics**

1. Once a person is in the air during a jump can they modify their path in the air of: a) their head b) Their whole body centre of gravity c) their hip joint (yes or no) 2. To achieve peak horizontal distance on flat ground, what should the angle of take off be?

*February 7, 2013 by tasneem*

**biomechanics**

a shot is released at a height of 1.89m, with a speed of 13m/s and at an angle of 34 degrees. Calculate the maximum height reached and the time at which this occurs, the range and the time of flight, and the optimum projection angle.

*February 16, 2012 by J*

**biomechanics**

A cyclist is coasting up a hill. At t=0, the cyclist has a velocity of 14.27 m/s. If the acceleration of the cyclist is constant at -1.67 m/s2, how long will it take the cyclist to come to a complete stop? If the peak of the hill is 40 m away from the cyclist at t=0, will she...

*September 21, 2016 by Alice*

**Biomechanics**

John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200m, which he covers at 4.5 m/s. At what average speed must Al run to beat John?

*September 27, 2013 by Walter*

**Basic Biomechanics**

John and Al are in a 15 km race. John averages 4.4 m/s during the first half of the race and then runs at a speed of 4.2 m/s until the last 200 m, which he covers at 4.5 m/s. At what average speed must Al run to beat John?

*September 29, 2013 by Walter*

**Biomechanics**

During the support phase of walking the absolute angle of the thigh has the following angular velocities frame 38 0.6167s 1.033rad/s frame 39 0.6333s 1.511rad/s 40 frame 0.6500s 1.882rad/s calculate the angular acceleration at frame 40 from frame 38

*March 9, 2013 by Vanitha*

**biomechanics **

Compare the kinetic energies of the following: a) A baseball (mass=0.145kg) moving at 100 km/h. b) A runner (mass = 75 kg) moving at 30km/h. c) A swimmer (mass = 75 kg) moving at 7 km/h. d) A discus (mass = 2 kg) moving at 20 m/s.

*August 2, 2016 by anonymous*

**biomechanics**

A Softball is Thrown at an angle of 45 degrees with the horizontal. It leaves the hand 2m above the ground. Its Initial Velocity is 20 m/s . Neglecting all external resistance, how far would it travel ? The point at which it hits the ground is at the same level as the ground ...

*March 18, 2013 by yaya*

**Basic Biomechanics**

Wendell invests $10,000 in a stock por5tfolio made up of Petroleum Special at $30 per share, Newshoe at $12 per share, and Beans & Sprouts at $2.50 per share. He places 60% of the money in P.S., 30% in N, and 10% in B & S. With market values changing (P.S. down $3.12, N up 80...

*September 27, 2013 by Walter*

**Biomechanics**

Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb. assuming the upward direction is regarded as positive, what is Larry’s acceleration in m/s2? What is happening to the elevator at this instant (i.e...

*October 22, 2013 by Zack*

**BIOMECHANICS**

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 ...

*December 5, 2010 by jhkh*

**Basic Biomechanics**

A car teeters on the edge of a cliff. A eagle weighing 55 N lands on the hood 1.1 M from the edge of the cliff which functions as an axis. At the same time, an owl weighting 44 N lands on the trunk 1.5 m from the axis. What are the torques exerted by the birds? What will ...

*June 8, 2012 by Joshua Mclaurin*

**Biomechanics **

A diver is trying a new more and is attempting to increase his angular acceleration in order to increase the angular displacement and thus produce more rotations from a standing start on the board the diver accelerates at 950 degree/s/s.what is the angular displacement over 0....

*March 9, 2013 by Vanitha*

**Biomechanics**

A ball is thrown vertically upwards in the air at a velocity of 50(m/s) and reaches a maximum height of 20(m). Calculate the time when the ball reaches the 10(m) mark, while going up and coming down. Use the following equation of motion: y(f) = y(i) + v(i)t+1/2at^2 y(f) and y(...

*July 17, 2012 by Jack*

**BioMechanics**

You have a subject (height = 150 cm, mass = 85 kg) lying prone on a moment table with their feet pressed against the foot rest. Assuming that you zeroed the scale before the subject got on the table, the scale now reads 40 kg. Where is the centre of mass (relative to the feet...

*February 21, 2015 by Jessica*

**Biomechanics**

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 ...

*November 21, 2010 by Walter*

**biomechanics**

Calculate the magnitude of the force required to cause an anterior dislocation of the glenohumeral joint given that he force has a lever arm of 52 cm, the maximum magnitude of the resistance force is 1080 N and the resistance force has a lever arm of 4.3 cm.

*December 12, 2012 by dmkp*

**biomechanics **

a sailboarder is zipping northeast across the river wit ha velocity of 10 m/s relative to the water the river current is moving the water north at a velocity of 3 m/s downstream. if the angle between the relative velocity of the sailboard and the river current is 30 degrees, ...

*February 21, 2013 by Anonymous*

**Basic Biomechanics**

Wendell invests $10,000 in a stock portfolio made up of Petroleum Special at $30 per share, New shoes at $12 per share, and Capital beans and Sprouts at $2.50 per share. He places 60 percent of the money in P.S., 30 percent in N, and 10 percent in B & S. With market values ...

*September 29, 2013 by Walter*

**Biomechanics**

Bob bench presses a 50 lb barbell. He maintains a constant speed on the way up and on the way down. If the barbell moves 75 cm in each direction how much work does Bob do on the barbell on the way up and the way down? What is the total work done?

*August 2, 2016 by anonymous*

**biomechanics**

calculate the following body segment parameters for the thigh of a subject with a height of 180cm and mass of 72kg a) segment mass b) segment length c) centre of mass position relative to proximal end d) radius of gyration about proximal end e) Moment of Inertia about proximal...

*November 14, 2012 by dmkp*

**biomechanics**

The sweet spot on a baseball bat is 120 cm from the axis of rotation during the swing of the bat. (This seems long at first, since the bat is shorter than 120 cm. But the bat’s axis of rotation is outside of the bat and passes through the body of the batter.) If the sweet ...

*August 3, 2016 by anonymous*

**Physics (Biomechanics)**

Scott is rolling down a 30° slope on his skateboard.The total mass of Scott and the skateboard is 75 kg. The rolling friction between the skateboard wheels and the concrete is 9 N acting backward against the skateboard. The drag force due to air resistance is 11 N acting ...

*October 24, 2015 by Deucalion*

**Biomechanics**

Take a metal coat hanger and straighten it. Hold a 10 inch straight section so it points up in the air. Holding the bottom still and using the other hand to bend it to the side, move the end 1 inch then release it. What happens? Repeat this with 2 inches, 3 inches, etc, until ...

*June 14, 2014 by courtney*

**Biomechanics**

Two ice skaters start out motionless in the center of an ice rink. They then push each other apart. The first skater (mass = 80 kg) moves to the right with a velocity of 2.5 m/s. The second skater (mass = 58 kg) moves to the left at some unknown speed. If we assume that the ...

*April 6, 2014 by Brendan *

**Biomechanics**

A hammer thrower is trying a new throw by adjusting the arm length to increase angular velocity technique1 angular velocity of15.4rad/ s with the hammer being 139.8 cm from the shoulder joint in technique2 they rotate with an angular velocity of 13.9 rad/s with the hammer ...

*March 9, 2013 by Vanitha*

**Biomechanics**

While pushing off against the starting blocks at the beginning of a race, Olympic swimming great Michael Phelps generates a force that increases linearly from 0 N to 800 N over the first 0.30 s, and then decreases steadily back to 0 N over the remaining 0.30 s (see the graph ...

*April 6, 2014 by Brendan *

**maths/physics/biomechanics**

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 ...

*February 9, 2012 by alex*

**biomechanics**

When a weight-lifter lifts a weight equal to his upper body weight his trunk makes an angle of 40 degrees, with the vertical, as shown in the diagram below. In this position the erector spinae muscles exert a large force on the sacrum at an angle of 40 degree to the vertical ...

*December 12, 2012 by dmkp*

**Biomechanics**

Shoulder abduction = 15¡ã Abduction acceleration = 50/rad/s/s Abduction velocity = 20 rad/s Radius of gyration and COM location from joint = 25cm Mass of hand + Arm = 8 kg Force of middle deltoid =400N Middle deltoid only active muscle Force of theraband = 70N Middle deltoid...

*March 29, 2015 by Ming*

**biomechanics**

for a man of mass 75kg and height 185 cm claculate the following using standard anthropometric data. 1. length of his upper arm 2. mass of his upper arm 3. position of the centre of mass of his upper arm relative to the glenohumeral joint 4. radius of gyration of his upper arm...

*December 12, 2012 by dmkp*

**Biomechanics**

A person with a body mass of 65 kg was running over level ground with a strong tailwind, while wearing a 10 kg weighted vest. The tailwind applied a force of 125 N to the runner’s body in the horizontal direction. Early in the stance phase, the runner generated a vertical ...

*April 6, 2014 by Brendan *

**biomechanics **

peter, a 100 kg baketball player, lands on his feet after completeing a slam dunk and then immediately jumps up again to celebrate his basket. when his feet frist touch the floor after the dunk, his velocity is 5 m/s downward, and when his feet leave the floor .50 s later, as ...

*March 19, 2013 by Anonymous*

**biomechanics**

Consider an experiment where a subject lands during two conditions from a height of 0.2 m. During the first landing condition, the subject lands 'stiffly' (e.g., very little knee flexion). During the second landing condition, the subject lands 'softly' (e.g., lots of knee ...

*November 9, 2014 by Anonymous*

**biomechanics**

A gymnast is performing her routine on the balance beam. She is standing on her left leg and facing forward along the long axis of the beam. Her right leg is flexed 90 degrees at the hip and with the knee extended. Her left arm is fully abducted 180 degrees at the shoulder, ...

*August 3, 2016 by anonymous*

**biomechanics**

A golfer’s hands move through an arc length of 10 cm during a putt. What arc length does the head of the putter move through if the hands are 50 cm from the axis of the rotation and the putter head is 150 cm from the axis of rotation?

*August 3, 2016 by anonymous*

**Biomechanics**

Person A: Weight: 1200 N Net Impulse for counter movement jump: 240 Ns Person B: Weight: 800 N Net Impulse for counter movement jump: 160 Ns 1) Which person jumped highest? 2)What was kinetic energy of each person right before they left the ground? 3)What was the potential ...

*December 6, 2015 by J.PT~*

**Biomechanics**

If the volume of a material is conserved under loading (Volume without force = Volume with force) what is the material’s Poisson’s ratio? You can assume that the material is isotropic (it will behave the same in every direction). Hint: take a cube and increase the length ...

*October 14, 2012 by Aaron*

**biomechanics**

A subject with a height of 165cm and mass of 69 kg is sitting with his lower limb positioned with hip in 90 degree of flexion and knee in full extension and foot in 90 degree of dorsiflexion a) calculate the inter-segment force at the knee joint b)Calculate the net external ...

*November 14, 2012 by dmkp*

**biomechanics**

a)Describe the structure of the contractile elements of skeletal muscle b)Sketch a graph of the relationship between developed tension and muscle length and explain the shape of the curve in terms of the interaction between thick and thin myofilaments C) sketch a graph of the ...

*November 14, 2012 by dmkp*

**Biomechanics**

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...

*October 8, 2011 by Esther*

**Biomechanics**

Olympic cross country ski champion, Henrik Henrikson, is using a new ski wax, Gripola, that is supposed to stop his ski from slipping backwards when he pushes off against the snow (it gives him a coefficient of static friction between the ski and the snow of 0.20). While ...

*April 6, 2014 by Brendan *

**Biomechanics**

A juggler performs in a room with a ceiling that is 2.4 m above the level of his hands. He throws a ball (diameter of 10 cm) vertically so that it just reaches the ceiling. what initial velocity does he throw the ball? how long does it take for the ball to reach the ceiling? ...

*May 7, 2012 by Chleo*

**biomechanics**

When a weight-lifter lifts a weight equal to his upper body weight his trunk makes an angle of 40 degrees, with the vertical, as shown in the diagram below. In this position the erector spinae muscles exert a large force on the sacrum at an angle of 40 degree to the vertical ...

*December 12, 2012 by dmkp*

**Physics/ Biomechanics**

Compare the vertical jump heights obtained using the vertical velocity at take off and half the flight time. Which one do you think is more accurate in assessing a vertical jump performance? - my vertical jump height using vertical velocity at take off = 0.28m - my vertical ...

*October 17, 2014 by Anonymous*

**biomechanics**

What are the directions and magnitudes of joint reaction forces (both horizontal and vertical) and moments of the KNEE (running)? Data you will need are: Mass of participant: 67.2 kg Running direction: anterior Joint: Knee Segment: Lower Leg Knee coordinates (m) y: 4.207, z: 1...

*July 24, 2014 by biomechanics*

**Biomechanics**

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 ...

*December 5, 2010 by jim*

**BIOMECHANICS URGENT PLEASE HELP!!!**

URGENT!! PLEASE HELP ASAPPP!! What are the directions and magnitudes of joint reaction forces (both horizontal and vertical) and moments of the KNEE (running)? Data you will need are: Mass of participant: 67.2 kg Running direction: anterior Joint: Knee Segment: Lower Leg Knee ...

*July 24, 2014 by biomechanics*

**biomechanics**

When a weight-lifter lifts a weight equal to his upper body weight his trunk makes an angle of 40 degrees, with the vertical, as shown in the diagram below. In this position the erector spinae muscles exert a large force on the sacrum at an angle of 40 degree to the vertical ...

*December 12, 2012 by dmkp*

**Biomechanics**

Describe the human gait cycle. Explain the sinusoidal pattern experienced in normal gait. Using the below data complete the table to determine stride length, stride rate and then calculate velocity. SLOW: The subject took 33 steps of approximately 0.981 m in length. It took 18...

*May 7, 2012 by Chleo*

**Biomechanics**

An 88.9 kg weight lifter is required to perform a snatch movement for their final lift in a weight lifting competition. The standard weight lifting bar is 20 kg and the load attached to the bar was in the form of 6 x 20 kg weight discs, 2 x 10 kg weight discs, 2 x 5 kg weight ...

*May 7, 2012 by Chleo*

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