If the ball hit the stick and recurring, what happens to the stick? If you say the stick can turn right, you’re right. We can do this as well as this collision. If both things collide, they force each other. And every Newton, the forces are equal and contrary, which often momentum in the ball-bat system regularly. We mention the momentum as the mass product and speed of something.

Since the ball explodes the back, the only way for momentum is kept for the rod to be retrieved. (I know, my setup for this thinking experiment makes for a beautiful vacation vacation, but you’ll stay with me – it helps us to understand what happens in sweet place).

Off-Center collision

Ok, go to the stick and return it at the start of position. The ball is also launched by the stick. However, at this time, it was meant to the end rather than in the middle. Like this:

The stick also avoids right, but now it’s drive about its center, right? Why did it happen? Well, momentum is still stored, but now there is another preserved number – angular momentum. Angle momentum is a simpler old momentum except it is related to rotational motion instead of line in line.

While linear momentum depends on the masses and speed of the matter, the angular momentum is similar to the product of the angular velocity of object without inertia. Inertia chance is like rotational mass – it depends not only the masses of the matter but how much the mass is distributed. So, after the staff effect from the ball’s effect, obviously had a single momentum, because it rotates.

But what about the collision? Stick is not rotating and no angular momentum, so for angular momentum preserved then the ball must have angular momentum. Yes, a mass can have angular momentum even if it is not rotated. (This is one of the moments when physics seems strange.) The angular momentum of the ball depends on linear momentum and where the stick is hit.