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A body of mass M collides against a wall with velocity V and rebounds with the same speed. It's change of momentum is
 2 years ago
 2 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
 2 years ago
 2 years ago

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

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

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

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

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

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

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

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

AadarshBest ResponseYou've already chosen the best response.0
Can anyone say about the signs?
 2 years ago

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

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

saliniBest ResponseYou've already chosen the best response.4
yeah 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
 2 years ago
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