Before colliding , the momentum of Block A is +450 kg^ * m/s , and Block Bis -150 kg^ * m/s . After , Block A has a momentum +100 kg*m/s. What is the momentum of Block B afterwards ?

Momentum of Block B after collision  is 200 kg.m/s

Explanation:

Momentum of block A before collision is

Momentum of block B before collision is

Momentum of block A after collision is

According to conservation of momentum, total momentum before collision is equal to total momentum after collision

Momentum of Block B afterwards is 200 kg.m/s

i don't understand. explain it clearly

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach