True Strike Golf Mat When Is Linear Momentum Not Conserved?

When is linear momentum not conserved? - true strike golf mat

1. Which of the following is the time is not preserved?
A) A bomb exploded in a chain broken into a hundred pieces.
B) A bowling ball hits the pins.
C) A golf ball with a club hit.
D) An astronaut floating in space launches a hammer and then moves in the opposite direction.
E) A branch from a tree struck by lightning and falls.

2. A bomb exploded in motionless gravity free space in the last minute, a number of small fragments. Which of the following statements about this case is true?
A) The kinetic energy is obtained in this process.
B) The fragments should have the same kinetic energy.
C) the sum of the kinetic energies of the fragments must be zero.
D) be the vector sum of the moments of fragments must be zero.
F) The speed at which each fragment of a must be equal to the speed of the other fragment.