Question

A cracker of mass 100g explode into two pieces of equal mass . Show that these two pieces of cracker explode in opposite directio?

Answer 1

Initially the cracker was at rest. The initial momentum of the system is zero. When the cracker bursts, it splits into splinters. According to conservation of linear momentum, the final momentum of the system has to be zero. So, the splinters fly in off symmetrically in all direction such that the overall momentum is zero.

Answer 2

Hey mate ^_^

In a closed system,
Total momentum P = constant

M= 100,

V= 0

∴ P = MV

P = 100 X 0 = 0

After explosion,

P = m1v1+ m2v2,

Where m1 = m2 = M/2

So,

P = M/2 x v1 + M/2 x v2
0 = M/2 (v1 + v2)
0 = v1 + v2
v1 = -v2

This shows that the two pieces of cracker exploded in opposite direction.

#Be Brainly❤️