Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

(a) Calculate the momentum of a $2000-\mathrm{kg}$ elephant charging a hunter at a speed of 7.50 $\mathrm{m} / \mathrm{s} .$ (b) Compare the elephant's momentum with the momentum of a $0.0400-\mathrm{kg}$ tranquilizer dart fired at a speed of 600 $\mathrm{m} / \mathrm{s}$ . (c) What is the momentum of the 90.0 -kg hunter running at 7.40 $\mathrm{m} / \mathrm{s}$ after missing the elephant?

(a) $p _ { 11 } = 18000 \mathrm { kg } \mathrm { ms } ^ { - 1 } = 15.0 \times 10 ^ { 2 } \mathrm { kg } \mathrm { ms } ^ { - 1 }$(b) $\mathrm { P } _ { n } = 625 \mathrm { kl }$(c) $\mathrm { pl } _ { 11 } =$ GUCliems ^{-1}

Physics 101 Mechanics

Chapter 8

Linear Momentum and Collisions

Moment, Impulse, and Collisions

Cornell University

Rutgers, The State University of New Jersey

University of Washington

University of Sheffield

Lectures

04:30

In classical mechanics, impulse is the integral of a force, F, over the time interval, t, for which it acts. In the case of a constant force, the resulting change in momentum is equal to the force itself, and the impulse is the change in momentum divided by the time during which the force acts. Impulse applied to an object produces an equivalent force to that of the object's mass multiplied by its velocity. In an inertial reference frame, an object that has no net force on it will continue at a constant velocity forever. In classical mechanics, the change in an object's motion, due to a force applied, is called its acceleration. The SI unit of measure for impulse is the newton second.

03:30

In physics, impulse is the integral of a force, F, over the time interval, t, for which it acts. Given a force, F, applied for a time, t, the resulting change in momentum, p, is equal to the impulse, I. Impulse applied to a mass, m, is also equal to the change in the object's kinetic energy, T, as a result of the force acting on it.

02:28

An elephant and a hunter a…

01:52

(a) Calculate the momentum…

05:35

Predict/Calculate Achargin…

04:54

Find the momentum of each …

07:03

(a) What is the magnitude …

02:27

A charging bull elephant w…

03:54

$\cdot \mathrm{A} 1200 \ma…

03:09

02:39

04:25

$\bullet$ The magnitude of…

04:23

01:01

What is the magnitude of t…

01:44

03:56

(a) How fast must a 3000-k…

well for the weapon for the orphaned. What is the must? Masked M is equal to 2000. Casey on velocity V is equal to 7.5 meters per second. Right. So the moment jumpy would be m times feet so that we go to 15 1000. He's imager. Seconds to This is for elephant, right? And what we missed. Pardon me. We have, uh, but Frank Kind is You've got cling Quiet. Night. God, for this frank elation we have masks is equal to 0.4 Casey on diversity is off. Some very much just burst again. So the moment it would be in me to be on that is homeless people. Four keys. Just one second. So we need to come here. Right? So momentum off elephant is too, Jim. Crank it, ager is equality 15,000 divided by 24. And that comes out to be divided by 24 since flight 62. 6.25 Thank you. So that is a quote to 625 is 21 so we can see that moment off. Elephant is 625 times the movement. Um, off Frank and measure so you can see the speed off The dark is pretty high. Hey, now, what is the moment of almost 90 kids Hunter running at 7.4 meters per second after missing the elephant Well under, he's now running on for the Hunter mosque. M is called to night Gizzi on the spirit tweet. It is running e 7.4 meters per second. So now the NOPD within 90 into 7.4 on that turns out to be 666 k z. Which person? So this is the moment, um off dumb hunter. So they have solved this even question.

View More Answers From This Book

Find Another Textbook

01:42

What is the average flow rate in $\mathrm{cm}^{3} / \mathrm{s}$ of gasoline …

04:51

Unreasonable ResultsSuppose two children are using a uniform seesaw that…

04:11

Repeat Exercise 5.18 with the contestant pulling the block of ice with a rop…

05:00

Unreasonable Results(a) Based on Kepler's laws and information on t…

00:56

A physics major is cooking breakfast when he notices that the frictional for…

02:03

Use the second condition for equilibrium (net $\tau=0 )$ to calculate $F_{\m…

02:47

(a) Calculate the height of a cliff if it takes 2.35 s for a rock to hit the…

03:52

A ball is thrown straight up. It passes a 2.00-m-high window 7.50 m off the …

06:03

Unreasonable Results A commercial airplane has an air speed of 280 m/s due e…

02:36

(a) What force must be exerted by the wind to support a 2.50-kg chicken in t…