Question

how to make a model of an object showing newtons third law of motion

Answer 1

You can make a apparatus consists of steel balls suspended on rod for a model of an object showing newtons third law of motion.It can show third law of motion.It is explained as follows

When the ball on one end is pulled back and then let go, it swings into the other balls. The ball on the opposite end then swings up with an equal force to the first ball, as shown in the illustration on the right. The force of the first ball causes and equal and opposite reaction in the ball at the other end.