Have you hit your windshield, or did the wind glass hit a rock?

Now the ball behaves as you expect. Its horizontal speed decreases so that it falls behind the original car. But it still will not hit your windshield. With pulling air and losing energy on the effect with the ground, each bounces less than the previous one. You should be fine.

rock

Now say that the child drops a rock outside the window. children! Or perhaps there is a truck carrying gravel, some of which slip through the crack. When the rock strikes the road, its movement can change in several ways. First, there is a friction force between the rock and the road, which will reduce the horizontal speed of the rock. As we saw above, the slower is bad.

Second – this can seem strange – because the rock is formed irregularly, it is possible that it rotates and hit the sidewalk in a way that makes it overcome higher than it started.

Hold! Is this not a violation of the law? As you know, the law of energy conservation? No, it’s energy transformation. The rotating and moving rock has both rotating motor energy and translation (sin). Some collisions can convert rotating energy into translation energy, making rocks bounce higher. Bad higher.

This is what it might seem:

So, you wander along the highway, for example, for example, for example per hour – there is a rock in the air on the top of its way. It is moments of rest, but you are not. Let the court note: the rock did not hit you. The rock was beaten. But the effect is the same. Either way, you need the new windshield.

Rock & Roll music

This is a reasonable scenario, but what if there is no truck in front of you? In fact, there is a more common reason for the windshield wrapping is a rock lying on the road that is kicked by another vehicle. You may think he returns to the car behind him, but this is not completely true. The rock is still not moving back.

This image: The wheel rolls along the road and gets a rock between the tire frames. When the rock comes into contact with the ground, it is in a state of rest. This is what it looks like: