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Calculate the final speed of a $110-$ kg rugby player who is initially running at 8.00 m/s but collides head-on with a padded goalpost and experiences a backward force of $1.76 \times 10^{4} \mathrm{N}$ for $5.50 \times 10^{-2} \mathrm{s}$

$v _ { \mathrm { f } } = - 0.80 \mathrm {~ m/s } ^ { - 1 }$

Physics 101 Mechanics

Chapter 8

Linear Momentum and Collisions

Moment, Impulse, and Collisions

Cornell University

University of Washington

Simon Fraser University

McMaster University

Lectures

04:30

In classical mechanics, im…

03:30

In physics, impulse is the…

05:24

A football player with a m…

04:27

(I) A 110-kg tackler movin…

01:53

(I) A 130 -kg tackler movi…

01:15

Two football players colli…

02:18

A $0.50-\mathrm{kg}$ ball …

05:44

On a very muddy football f…

06:40

02:03

A $90.0-\mathrm{kg}$ fullb…

02:02

An unwary football player …

04:21

$\bullet$ On a very muddy …

09:25

A 90.0-kg fullback running…

03:54

A 92 -kg fullback, running…

02:00

V High-speed stroboscopic …

02:15

Professional Application

03:34

A 95 -kg fullback, running…

08:22

An 88 kg fullback moving e…

02:17

A brave but inadequate rug…

03:26

(II) A ball of mass 0.220 …

in this album was given eight NASA 110 kilograms initial off their eight meters per second, a force of 1.7654 and a time interval of 5.5 10 to be negative too. And we want to know what the final velocity of the rugby player is when you run into this post yes, rugby player and it's running into this whole post and the force of the rugby players wanted Syrians. It's going to be negative. So we can say that the impulse is our force starts changing time, which is equal to or change momentum, which is equal to our next trading. So we can say force right that note's people's velocity plus the initial good. It's a surprise. So that's the native 1.76 again because we do get back with Force I two kilograms, let's eat. So get the kind of bossy makes it here, bounce back and is now left at 6.8 meters

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