A sabotaged curling stone explodes into three pieces as it travels across the ice. Neglecting the force of friction. (K1)
A. . all three pieces will travel at the same speed
B . the magnitudes of the momenta for each piece will be the same
C. is an external net force had to act on the stone to accelerate the three pieces
D. the components perpendicular to the original motion must add up to zero
E. momentum is not conserved because of the small explosive charge