Impulse Definition and 905 Threads

i don't understand wat I am doing wrong here is my problem Choose the positive direction to be from the pitcher to the plate (some answers may be negative). A pitcher throws a 0.13 kg baseball so that it crosses home plate horizontally with a speed of 31 m/s. It is hit straight back at the...

[SOLVED] Impulse and depth********! Homework Statement In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, suffering only minor injuries. Assume that his speed at impact was 58 m/s (terminal speed), that his mass...

[SOLVED] IMPULSE, i need HELP! Homework Statement Until he was in his seventies, Henri LaMothe excited audiences by belly-flopping from a height of 11 m into 30 cm. of water (Figure 9-49). Assuming that he stops just as he reaches the bottom of the water and estimating his mass to be 76 kg...

A 30kg child moving at 4m/s jump onto a 50kg sled that is initially at rest on a long frictionless,horizontal. a) find the speed after the child jumps onto the sled b)find Kinetic Energy of the child after the child jumps onto the sled After coasting at constant speed for a short time, the...

A miniature spring-loaded, radio-controlled gun is mounted on an air puck. The gun's bullet has a mass of 5.00 g, and the gun and puck have a combined mass of 120 g. With the system initially at rest, the radio controlled trigger releases the bullet causing the puck and empty gun to move with a...

A 100g puck is revolving in a 20-cm-radius circle on a frictionless table. The string passes through a hole in the center of the table and is tied to two 200g weights. Suppose a flame burns through the string and causes the lower weight to fall off while the puck is revolving. What will be...

Homework Statement An object of mass 3.0 kg is projected into the air at a 45° angle. It hits the ground 3.7 s later. What is its change in momentum while it is in the air? Ignore air resistance. _____ kg·m/s downward Homework Equations F\DeltaT = \DeltaP =...

Homework Statement A block of mass 200g is suspended through a vertical spring.The spring is stretched by 1cm when the block is in equilibrium.A particle of mass 120g is dropped on the block from a height of 45cm.The particle sticks to the block after the impact.Find the max extension of the...

Homework Statement A billiard ball going 4 m/s collides with a stationary ball of equal size cause the second ball to move at an angle of 35 degrees at speed of 2.5 m/s --mass=.3 kg What impulse (magnitude and direction) did second ball receive? What about the first ball? What is the final...

A ball of mass 7.0 g with a speed of 25.2 m/s strikes a wall at an angle 23.0 ° and then rebounds with the same speed and angle. It is in contact with the wall for 39.0 ms. What is the magnitude of the impulse associated with the collision force? What is the average force exerted by the ball...

Why is more impulse delivered during a collision when bouncing occurs than during one when it doesn't?

The magnitude of the net force exerted in the x direction on a 3.15 kg particle varies in time as shown in the figure below. There is a graph that is supposed to be here. The y-axis is F(N) and the x-axis is t(s) It starts from the orgin then goes to point (2,4), then to (3,4), then ends at...

The magnitude of the net force exerted in the x direction on a 3.15 kg particle varies in time as shown in the figure below. There is a graph that is supposed to be here. The y-axis is F(N) and the x-axis is t(s) It starts from the orgin then goes to point (2,4), then to (3,4), then ends...

Homework Statement A 700 g air-track glider collides with a spring at one end of the track. The figure shows the glider's velocity and the force exerted on the glider by the spring. How long is the glider in contact with the spring? Homework Equations F(t_1-t_2)=mv_2-mv_1 The Attempt at...

Impulse help! emergency.(3 problems) Alright, so I have these problems due tomorrow, and I was out the other day so I do not understand it. If someone can tell me how to set each up, then I can probably work it out. Equations impulse= Force*\DeltaTime Force*\DeltaTime=mass*\Deltavelocity...

Okay, I was absent the day we did impulse at school, so now I'm confused as to how to do some of it. I just need to know how to set up the problems, I know that impulse=F\Deltat and that F\Deltat=m\Deltav...but I don't know where to go after that. The first problem: Two children, totaling...

Homework Statement A golf ball with a mass of 43.80 g can be blasted from rest to a speed of 64.60 m/s during impact with a club head. Assume that the impact lasts only about 0.980 ms. Calculate the change in momentum of the ball. Homework Equations P = mv Change in P = Pf - Pi J =...

Homework Statement A ball of mass m moving with velocity v_{i} strikes a vertical wall. The angle between the ball's initial velocity vector and the wall is \theta_{i} as shown on the diagram, which depicts the situation as seen from above. The duration of the collision between the ball and...

Homework Statement Mass of both end, distance from the pin point, height of the plug and its mass, angular velocity are given. Need to fine angular velocity w of the arm immediately after plug has wedged itself in the block. Homework Equations (Ho)o = (Ho)horizontal The Attempt at...

hi... a basic question... [ ppl are having heated arguments over this at home ] " when u jump out of a moving bus... u run a little distance" why we do this? what is this phenomenon?

Homework Statement given mass of bullet and box and given initial and final velocity of projectile, find kinetic friction coefficient Homework Equations G1 + integral of sum force respect to time = G2 The Attempt at a Solution I setup like this... mv(projectile) + mv(block...

Homework Statement A continuous-time system has the input/output relationship y(t) = \int_{-\infty}^{t} (t - \lambda + 2)x(\lambda) d\lambda Determine the impulse response h(t) of the system Homework Equations Convolution theorems y(t) = x(t) * h(t) Where y(t) is the output...

Homework Statement A 12 kg shell is launched at an angle of 55 degrees above horizontal with v_O = 150 m/s. When at highest point, it explodes into two fragments, M_1 with mass 9 kg and M_2 with mass 3 kg. The fragments reach the ground at the same time. The heavier fragment lands back at...

How to calculate , acceleration, force, momentum and impulse? I'm supposed to be able to calculate all of these things: velocity, acceleration, force, momentum and impulse. However, the physics course I'm taking explains it horribly! I think the formulas are: distance over time= velocity...

I am programming a simple physics simulation and have been following along with some books about the subject. Everything has gone well so far, although at the moment I'm stuck on how to calculate the impulse when two rigid bodies collide. I'll explain the algorithms that I'm using below...

Homework Statement A ball is traveling horizontally over a volleyball net when a player spikes it, driving it straight down to the ground. The ball's mass is .22kg, its speed before being hit is 6.4 m/s and its speed immediately after the spike is 21m/s. What is the magnitude of the impulse...

I need to find the Fourier Transform (FT) of: x(t)=\sum^{\infty}_{n=-\infty}((-1)^{n}\delta(t-nT)) Not really sure how to solve this problem, so any help will be appreciated. Also, if you guys know a good reference for non-uniform sampling and reconstruction, please post it.

I hope this is OK to post here. I thought it would be better here than in the math questions forum, since you are EEs, and probably have more experience dealing with things related to the delta function. Problem Let \hat{x}(t) = \sum_{k=-\infty}^{\infty}\delta(t-2k). Now let x(t) =...

Impulse Momentum Theorem! Homework Statement A student (m = 63 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.0180 s. The average force exerted on him by the ground is +16000. N, where the upward direction is taken to...

Homework Statement A uniform square board ABCD had mass 5kg and sides of length 60cm. The board is hinged at A so that it can rotate freely in a vertical plane. A light string of length 1 metre is attached to B and to a point E, 80cm above A. The bards rests in equilibrium with AB horizontal...

im reviewing for my final tomorrow, and there is a question that asks for the impulse experienced if a 70kg person lands on firm ground and stops after jumping from a height of 5m. what equation should i use to solve this?

the ball has a mass of 300g and is traveling at 20m/s. what will be its new velocity? section is on momentum and impulse

I have a question I am looking for an asnwer: Using the impulse momentum theorum, describe how it is possible to drop an egg from a 2 story high building and not have the egg break.

Homework Statement Before a collision, a 25-kg object is moving at +12m/s. Find the impulse that acted on teh object if, after the collision, it moves at: a. 8.0m/s b.-8.0m/s Homework Equations (c)=changes in: To find impulse, we would use the F=ma, so F=m*(c)v/(c)t So, F(c)t = m(c)v...

Homework Statement The net force acting on a glider on an air track (an essentially frictionless system) varies with time as shown in the following diagram. The vertical scale is such that the space between consecutive vertical gridlines is 5.0 Newton(s). The glider has a mass of...

Homework Statement A 50. kg cart is moving across a frictionless floor at 2.0 m/s. A 70. kg boy, riding in the cart, jumps off so that he hits the floor with zero velocity. a. What impulse did the boy give to the cart? b. What was the velocity of the cart after the boy jumped...

I am in great confusion in impulse term. As Impulse is the product of force and time and it is equal to change in momentum. Does a moving object have impulse? if not then why not?

Homework Statement Heres the problem i have been given in Grade 11 Physics for homework (keep in mind that i haven't done calculus yet so don't do anything too tricky): A satellite of mass 240 kg moving in free space at a velocity of 6000m/s is struck by an unknown object which causes it to...

I am having trouble with this question, I know what I need to find, just don't know what route to take. A 53.0 g tennis ball with an initial speed of 30.5 m/s hits a wall and rebounds with the same speed. The figure below shows the force of the wall on the ball during the collision. What is...

i am working with an encoder that says its output is impulse(ttl). I'm not quite sure what this means. is it just a digital signal? how does it work? any help you can give me would be great.

Homework Statement A linear harmonic oscillator is subject to friction(stokes). The Oscillator gets an Impulse at the time t = 0 at the rest position. What is the equation of motion for the time interval 0 - t0?Homework Equations Friction force: Fr = -a * x'(t); a = constant (stokes friction)...

Can anyone help me solve these questions on momentum and impulse? Thank you! 1. A 55 kg swimmer is standing on a stationary 235 kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +5.3 m/s relative to the shore. Find the recoil velocity that the raft would...

Ok, so this problem is kind of complicated, so ask me if you need clarification. This problem deals with Impulse and Momentum. There are two balls hanging vertically from a horizontal plane. Ball A is pulled back and is set up to strike ball B. Given for ball A - mass = 1.5 kg. Height...

A 0.500-kg ball is dropped from rest at a point 1.20 m above the floor. The ball reboundes straight upward to a height of 0.700 m. What are the magnitude and direction of the impulse of the net force applied to the ball during the collision with the floor? I have been trying to solve this...

A 1550kg car, traveling with a velocity of 12m/s plows into a 1220kg stationary car. During the collision the two cars lock bumpers and then move together as a unit. (a) what is tehir common velocity just after the impact? (b) What fraction of the initial kinetic energy remains after the...

Conceptual Question If two objects have the same momentum do they necessarily have the same kinetic energy? Give your reason. I would say no basically from just looking at formulas. P=mv for momentum K.E.= 1/2mv^2 for kinetic energy

I don't know why I'm getting the wrong answer on this one. A 5.00kg ball is dropped from rest from 1.20m above the floor. The ball rebounds .700m. What are the magnitude, and direction of the impulse or the net force applied to the ball during the collision with the floor? So I started by...

say there was a rifle that pivoted about the center of its butt.. if you knew the force from the bullet, the weight of the gun and its center of mass, the distance from the center of the barrel to the center of the butt, and the distance from the center of gravity and the center of the butt...

The question is "A 2 kg block initially hangs at rest at the end of two 1-meter strings of negligible mass. A .003 kg bullet, moving horizontally with a speed of 1000 meters per second, strikes the block and becomes embedded in it. After the collision, the bullet/block combination swings upward...

I am stuck on a part of my physics hw, please help if you can "Object A has mass mA = 7 kg and initial momentum vector pA,i = < 17, -8, 0 > kg · m/s, just before it strikes object B, which has mass mB = 11 kg. Just before the collision object B has initial momentum vector pB,i = < 3, 5, 0 > kg...