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doubt on force and momentum

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rishicomplex




PostSubject: doubt on force and momentum Tue Feb 24, 2009 1:18 pm

A car and a truck undergo head-on collision. The truck has greater mass and velocity than the car.


1. Which of the two experiences a greater force?
2. Which undergoes a greater change in momentum?
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siya
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PostSubject: Re: doubt on force and momentum Tue Feb 24, 2009 1:28 pm

hey ya dis came in my prelims....wats d answer...i dint knew....
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Anu..i luv icse...:)
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PostSubject: Re: doubt on force and momentum Tue Feb 24, 2009 1:33 pm

1. car experiences....coz truck having gr8 mass, exerts greater force

2 truck, coz it has more m n v
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Namit
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PostSubject: Re: doubt on force and momentum Tue Feb 24, 2009 1:45 pm

yaa rite.. i attempted dis question nd got full marx..  bt y did u ask anu wen u knew it??
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PostSubject: Re: doubt on force and momentum Tue Feb 24, 2009 1:49 pm

namit sir...read properly...i didnt ask...rishicomplex asked !!! Very Happy
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QUEST
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PostSubject: Re: doubt on force and momentum Fri Feb 27, 2009 8:17 pm

THE FORCE EXPERIENCED BY EACH OF THEM SHOULD BE EQUAL BY NEWTON,S THIRD LAW.

TRUCK HAS GREATER CHANE IN MOMENTUM.

BUT RATE OF CHANGE OF MOMENTUM IS FASTER FOR CAR, SI IT GETS MORE DAMAGED.
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PostSubject: Re: doubt on force and momentum Fri Feb 27, 2009 8:24 pm

well anu 1st ans is wrong ..but the 2nd is correct
1) Both the truck n car will exp same force..accordin to newtons 3rd law..
2)Truck exp greater change in momentum bcoz of greater mass

and quest...car get mor damage due to greatr change in acceleration which is inv prop to the mass..
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QUEST
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PostSubject: Re: doubt on force and momentum Fri Feb 27, 2009 8:28 pm

THANKS

hey ALL THE BEST TO FOR YOUR EXAMINATION
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PostSubject: Re: doubt on force and momentum Fri Feb 27, 2009 8:29 pm

same to u buddy...
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PostSubject: Re: doubt on force and momentum Fri Feb 27, 2009 9:38 pm

thanks for correcting both of you....
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