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anonymous
 4 years ago
A body of mass M collides against a wall with velocity V and rebounds with the same speed. It's change of momentum is
anonymous
 4 years ago
A body of mass M collides against a wall with velocity V and rebounds with the same speed. It's change of momentum is

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0momentum= mass*velocity both remain same after collision so no change in momentum.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Answer is given as 2MV

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0But how? Are we to add both the momenta?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0adarsh see the direction change as well first it is +v next it is v

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Okay. yeah, got it. First, Its MV. Second is MV. Subtracting, we get 2MV.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0By subtracting how we get 2MV

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0But I don't understand why the sign is +ive in first case and ive in second case.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0See, MV  (  MV) = MV + MV = 2MV(Simple integer addition)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Can anyone say about the signs?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1329838538143:dwbecause we shud maintain a standard sign system like think this way

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0So, in all physics problems requiring direction, we need to follow Cartesian System, rite?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yeah there is more than that for that u need to come to 11th for now understand that when it is a 1dimensuional(straight line motion) follow the coordinate axes
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