Now the ball behaves more as you can expect. His horizontal speed decreases so that he remains behind the original car. But it still won’t hit your windshield. In the case of air resistance and energy loss on impact with the ground, each reflection is slightly lower than before. You should be fine.
Twist
Now say that the child releases rock through the window. Kids! Or maybe there is a truck carrying gravel, and some of them move through a crack. When the rock hits the road, his movement can change in several ways. First of all, there is a friction force between the rock and the road, which will reduce the levels of rock speed. As we saw above, he is slowly furious.
Secondly – and it may seem strange – because the rock is irregularly shaped, it is possible that it turns and hits the pavement in a way that makes it skip higher than it began.
Stay! Is this not a violation of law? Do you know the Energy Protection Law? No, it’s energy carry. The rotary and moving rock has both rotational and translational (linear) kinetic energy. Some collisions can convert rotation energy into translational energy, which makes the rock higher. Higher is furious.
Here’s what it can look like:
So you swim along the highway, say, 70 miles per hour – in the air there is a rock on the top of his path. It’s temporarily at rest, but you are not. Let the court pay attention: the rock did not hit you. You hit the rock. But the effect is the same. Either way, you need a recent windshield.
Rock and Roll
This is a likely scenario, but what if there is no truck in front of you? In fact, a more common cause of damage to the windshield is a rock lying on the road, which is thrown out by another vehicle. You may think that he is shot at the back of the car, but this is not right. The rock will still not go back.
Imagine: the near the road is rolling and the rock is pressed between tire treads. When the rock contacts the ground, he rests. Here’s what it would look like: