Jump Definition and 313 Threads

Hi, I need a bit of help with the following: I need to calculate the landing position of a man if he jumped, using his speed, gravity and jump height. This needs to be done in 3D-space. I would use the template, but I really don't know where to start. I imagine it's something to do with...

Homework Statement Two cars start 200 m apart and drive toward each other at a steady 10 m/s. On the front of one of them, an energetic grasshopper jumps back and forth between the cars (he has strong legs!) with a constant horizontal velocity of 15 m/s relative to the ground. The insect...

Homework Statement At your disposal are a scale and a measuring tape. You are not allowed to jump on the scale. How would you go about measuring the average power you exert on the floor?Homework Equations P_{average}=\frac{\Delta E_{tot}}{\Delta t}The Attempt at a Solution I am honestly lost...

Homework Statement [PLAIN]http://img199.imageshack.us/img199/2586/physicshelp.jpg 1. What is the time interval between the initial jump and when the center of mass reaches the maximum height? 2. Average horizontal velocity during the jump. 3. The time interval between the time when the...

How fast does something need to accelerate in order to jump? Say a weight of 100 lbs, or kg's, etc.

how powerful would "super jump shoes" have to be? I was just wondering, if there were "super jump shoes", that would hit on the ground and would propell you upwards, how powerful would those shoes have to be? I was hoping that you could use poweful magnets to do it. If you put like ends of...

http://www.buythecardiojump.com/Default.asp?tcode=pi8&tag=google&gclid=CI-o0orY5ZkCFQkzawodGFudQg&bhcp=1 :smile::smile::smile::smile::smile: I don't know what can be said. Maybe its a Zen thing.

I jump off a high bench (5ft high) to the ground. What is the g-force of the impact and how do you calculate it. It seems mass is irrelevant for this Joe

A daredevil on a motorcycle leaves the end of a ramp with a speed of 42.0 m/s as in the figure below. If his speed is 39.8 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. So v0=42.0m/s and vf=39.8m/s...what equation am...

Hi all, I couldn't find any proof of the following statement: The Fourier series expansion of f(x), which has a discontinuity at y, takes on the mean of the left and right limits i.e. f(y)= (1/2)(f(y+)+f(y-)) is there anyone who can help me? Thanks

Homework Statement A bungee cord is 30.0 {\rm m} long and, when stretched a distance x, it exerts a restoring force of magnitude kx. Your father-in-law (mass 100 kg) stands on a platform 45.0 {\rm m} above the ground, and one end of the cord is tied securely to his ankle and the other end to...

Homework Statement A Long-Jump Contestant experiences at the instant of landing, a gravitational force of 538N [Downwards], and a force applied by the ground to the feet, of 6382N [28.3 degrees above the horizontal] (The answer is given in the book, being 6.15 X 10^3 N [23.9 Degrees above...

http://www.break.com/index/kitten-attempts-epic-jump.html Ha

Homework Statement A skier leaves the ramp of a ski jump with a velocity of v = 8.0 m/s, θ = 15.0° above the horizontal, as in the figure. The slope is inclined at 50.0°, and air resistance is negligible. (Assume up and right are positive, and down and left are negative.) (a) Find the...

So far, I'm pretty happy with my education. I feel like I'm understanding things as well as they are presented and developing insight into physics and engineering, but my college seems to think that their degrees speak for themselves and if you grind through their classes, you will automatically...

Here's a little physics in action to bring in the new year. http://www.smh.com.au/news/world/robbie-maddison-completes-vegas-jump/2009/01/01/1230681649061.html His runway speed was 54 mph. About 24 m/s. Figuring that V² = 2gh that translates to about 97.5 feet of potential energy. The Vegas...

Homework Statement In order for a volleyball player to jump vertically upward a distance of 0.8 meters, his initial velocity must be?Homework Equations s=v0t + .5at2 vf= v0 + atThe Attempt at a Solution I missed the question the other day on a practice and it has been forever since I messed...

Homework Statement A 73 kg high jumper leaves the ground with a vertical velocity of 7.6 m/s. How high can he jump? The acceleration of gravity is 9.8 m/s^2. Homework Equations mgh1 + 1/2mv1^2 = mgh2 + 1/2mv2^2 The Attempt at a Solution 0 + 1/2(7.6)^2 = 9.8(h2) + 1/2(v2)^2...

Homework Statement Typical bungee jumper. Rope has natural length h, spring constant k, man has mass m. The safety limit for the max acceleration of the man is 3g. Derive an expression for x double dot, and show mg *greater or same than* kh/4 Homework Equations Well I'm sure everyone...

I've always wondered this. Hopefully someone one knows. I always read the electrons jump, but they never say through what. thanx

Is there any paper on the quantization of color? Maybe not since it’s obvious. I always thought that color was on a continuum. But now I realize that electrons jump between a limited set of orbits.

Hi everyone! I am recently doing an assignment for my broadening course. But I really don't know how to answer these questions as I only have basic knowledge for physics. Could anyone help me out? The questions are as follow: 1. Explain why iron chain is not used as bungee jump string instead...

I know that voltage of a capacitor is continuous. However, I want to learn that; can it be a jump in the capacitor voltage? Also, if it is, how it can be happened?

Homework Statement Kate, a bungee jumper, wants to jump off the edge of a bridge that spans a river below. Kate has a mass (m) , and the surface of the bridge is a height (h) above the water. The bungee cord, which has length (L) when unstretched, will first straighten and then stretch as Kate...

Homework Statement I am given the following function, piecewise: f(x) = (-x+b) (x<1) 3 if x=1 (-12/(x-b))-1 (x>1, x=/b) I am asked: 1) For what value(s) of 'b' does 'f' have a removable discontinuity at 1? 2) For what...

Homework Statement If a salmon swims straight upward in the water fast enough to break through the surface at a speed of 2.5 meters per second, how high can it jump above water? Homework Equations i don't know, because all i know is speed. The Attempt at a Solution is...

Homework Statement Sam (65 kg) takes off (from rest) up a 50 m high, 10° frictionless slope on his jet-powered skis. The skis have a thrust of 260 N. He keeps his skis tilted at 10° after becoming airborne, as shown in Figure P6.43. (Figure attachment not working- it's basically just drawing...

Does this jump honor the concept of physics?? http://www.youtube.com/watch?v=2YMQR13ia... -James Bond: Casino Royale Explain what is wrong with the action scene and how the segment should be modified so that it honors the laws of physics. The only thing I can think of is that the...

Hello All! Quick question... When a high voltage capacitor is charged to say 3000 volts, a spark will jump across the terminals. Does the spark jump from the positive to negative terminal, or from negative to positive? Thanks Very Much! Bill

An athelite wireless gaurate a long jump,at what angle he should jump?

Hi all. I had grade 11 physics so I know the basics on physics.. grade 12 comes later this year... Anyways I was thinking about the systems in a jump, and the motion involved and I know motion physics work and all so don't get me wrong :P I'm not trying to disporve something here... I just know...

Homework Statement "In a chase scene, a movie stuntman is supposed to run right off the flat roof of one city building and land on another roof 1.6 m lower." "If the gap between the buildings is 4.5 m wide, how fast must he run? " Homework Equations Vf^2 = V0^2 + 2a (Xf-X0) This...

Homework Statement I did this problem in my book, then checked the answer, and it showed what must be a typo for answer a (acceleration should be m/s^2 not m/s), and answer c just makes no sense. "When jumping, a flea reaches a takeoff speed of 1.0m/s over a distance of 0.50mm." a. What...

The resilin in the upper leg (coxa) of a flea has a force constant of about 26 N/m, and when the flea cocks its jumping legs, the resilin in each leg is stretched by approximately 0.10mm . Given that the flea has a mass of 0.55mg , and that two legs are used in a jump, estimate the maximum...

I have a problem. I think that I am just not seeing it the right way. "A high jumper leaves the ground at a 27degrees and lands 7.8 m away. What is the initial velocity. Every formula I have keeps giving me two variables.

Large insects such as Locusts can jump as far as 75 cm. on a level surface. an entomologist analyzed a photograph and found that the insects's launch was at an angle of 55. What was the initial velocity of the insect? those are the only givens I am given... how do i figure this one out? Even...

If you stand on a bathroom scale, spring inside compresses .6mm, and tells your weight is 710 N. Now if you jump on the scale from a height of 1m, what does the read at it's peak? This is what I tried to do: I used Hooke's law: F_{}s= k*x and solved for the k which is spring constant...

A ski jumper leaves the end of the ski jump headed upward along a parabolic trajectory. He reaches his peak height 10 meters beyond the end (horizontal distance) and ten meters above it (vertical distance). The ski slope falls away from his departure point in a straight line 45 degrees below...

I am a coach for athletes in various sports and have a problem that I can't figure out, but I'm hoping will be easy for someone here. I am looking to determine the height of a vertical jump from some limited information via an accelerometer. The accelerometer is attached near the center of...

Homework Statement Kate, a bungee jumper, wants to jump off the edge of a bridge that spans a river below. Kate has a mass m, and the surface of the bridge is a height h above the water. The bungee cord, which has length L when unstretched, will first straighten and then stretch as Kate falls...

A basketball is tossed up into the air, falls freely, and bounces from the wooden floor. From the moment after the player releases it until the ball reaches the top of its bounce, what is the smallest system for which momentum is conserved? Here are some choices given... - momentum is...

i am having trouble with this exercise, i don't understand much and the professor doesn't explain too well so I am kinda lost. Consider a person on the moon who launches herself into a standing broad jump at 45 degrees. The average force generated during launching is, F = 2W and the...

Homework Statement Chris jumps off a bridge with a bungee cord tied around his ankle. He falls for 15m before the bungee cord begins to stretch. Chris's mass is 75kg and we assume the cord obeys Hooke's law F = -kx, with k=50N/m. If we neglect air resistance estimate how far below the bridge...

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[SOLVED] The Flea Homework Statement A flea, jumping with its highest possible initial speed, can jump to a maximum vertical height of 1 cm. What is the time spent in the air by the flea during the vertical jump? What would be the time spent in the air if the flea were instead to leave the...

[SOLVED] Just Checking Homework Statement In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80 . A flea jumps straight up to a maximum height of 0.550m . What is its initial velocity Vsub0 as it leaves the ground...

hey guys imm new here i got a question in my book i can't figure out it says: an athlete executing a long jump leaves the ground at a 30 degree angle and travels 7.80m (a) what was the takeoff speed? (b) if this speed were increased just 5.0 % how much longer would the jump be? anyone...

An athlete executing a long jump leaves the ground at a 40° angle and travels 6.30 m. a) what was the take off speed? b) If the speed was increased by just 4.0 percent, how much longer would the jump be? ** i used squareroot of 2ax to find initial velocity and got 8.91 m/s but got it...

A skier (m=59.00 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 7.70 m and D = 12.90 m, find H. img:http://i242.photobucket.com/albums/ff106/jtdla/prob21a.gif I was given a hint to treat the skier as a projectile, so I broke...

Homework Statement A kangaroo jumps to a vertical height of 2.3 m. How long was it in the air before returning to Earth? Homework Equations kinamatics The Attempt at a Solution i got .68 which i think is rite but i don't know what do you get?