i just dont understand how the total initial momentum 0? The rocket and module both have mass and velocity, both move in the same direction before the explosion.
do u have anyone u can ask at the moment?

Reply 7

Cicada313

1

The total momentum before the collision of the system is equal to the total momentum after the collision. Therefore, the initial momentum will be zero as they were travelling with constant speed.

Reply 8

: ).

OP

13

Original post by Cicada313

The total momentum before the collision of the system is equal to the total momentum after the collision. Therefore, the initial momentum will be zero as they were travelling with constant speed.

even if it has a constant speed. it will have some momentum...
ik that momentum before and after explosion is the same. after the explosion both undergo the same change in momentum but in the opposite direction so total momentum after the explosion is 0. but why is the total momentum before explosion 0? whats the reason behind it? both have the same speed and also have a mass.

Reply 9

: ).

OP

13

a little help would be appreciated

Reply 10

Ailurophile03

17

Bump, I’ll keep bumping it till someone answers 😣

Reply 11

Ailurophile03

17

@Roha125 mate can u do this?

Reply 12

Roha125

15

Not 100% sure but my guess
Initial momentum isn't zero,there is momentum just like you stated but mark scheme is seeing this as a condone and only 4 marks max can be obtained out of 5 if intial 0 stated,thats why alternative.

Reply 13

: ).

OP

13

Original post by Ailurophile03

Bump, I’ll keep bumping it till someone answers 😣

todays paper was just like physics unit 1 were I ended up with a U grade. cant stop crying.
how was urs?

Reply 14

Ailurophile03

17

Original post by : ).

todays paper was just like physics unit 1 were I ended up with a U grade. cant stop crying.
how was urs?

Don’t say like this inshallah it will be goood
Oh I didn’t have the exam, I meant I’ll have the mock today. I’m currently in Italy so I can’t take the exam at the moment. I thought I told u😓.
Although I wish I could give the exam in Jan cause now I have to give AS PHYSICS, A2 physics, A2 bio,A2 chem along with bad units of AS😩

Reply 15

EmaiI address

6

https://www.thestudentroom.co.uk/showthread.php?t=6298038&p=86700218#post86700218

Reply 16

Cicada313

1

Original post by : ).

todays paper was just like physics unit 1 were I ended up with a U grade. cant stop crying.
how was urs?

Is your board Edexcel or Cambridge?

Reply 17

: ).

OP

13

Original post by Cicada313

Is your board Edexcel or Cambridge?

edexcel

Reply 18

Roha125

15

Original post by : ).

edexcel

Thank goodness me that I shifted to cambridge from start of A levels
Edexcel is much more applied physics and cambridge is all maths.
All of my friends gave edexcel AS,did bad and now in cambridge doing AS&A2

Good luck to edexcel physics candidates
I thing to note that our city doesn't have any good edexcel teacher so no one got good guidance

Reply 19

: ).

OP

13

Original post by Roha125

Thank goodness me that I shifted to cambridge from start of A levels
Edexcel is much more applied physics and cambridge is all maths.
All of my friends gave edexcel AS,did bad and now in cambridge doing AS&A2

Good luck to edexcel physics candidates
I thing to note that our city doesn't have any good edexcel teacher so no one got good guidance

I swear I tried so hard to shift to Cambridge last year..after my IGCSE's ...but I couldn't because of my financial situation...sigh

Momentum

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you