A BLOCK OF MASS 20KG MOVING WITH A SPEED OF 18 KM/H EXPLODES AND SPLITS INTO 2 PARTS.ONE PART OF MASS 15 KG COMES TO REST FIND THE VELOCITY OF SECOND PART?
4 answers
20 * 18 = 15 * 0 + 5 * v
because
momentum before = momentum after
momentum before = momentum after
since there are no external forces on the system to change its momentum
20*18=15*0+(20-15)*x
360=0+5*x
x=360/5
velocity of the other part=72
360=0+5*x
x=360/5
velocity of the other part=72
1 answer