A 70 kg adult and a 35 kg child face each other on ice skates. According to Newton's laws of motion, what will happen if the two skaters push against each other?
The adult will not move, but the child will move backward,
B
They will both move backward, but the child will move at a faster
speed.
c) They will both move backward at the same speed.
D
The adult will move backward, but the child will not move.