0 kg*m/s
Consevation of momentum applies. The final compond mass must have the same momentum as the net momentum of the two balls before the collision. Remember, momentum is a vector and direction is important. For example if the two balls are moving toward each other with the same momentum, the net momentum is zero because they are moving in opposite directions. So the compound ball will not move. Or, if ball 1 is moving left and has a greater momentum then ball 2 ,moving right, then the compound ball will move left. Its momentum will equal the difference between the two momentums because when you add two vectors in opposite directions you subtract their magnitudes. Mechanical energy (potential + kinetic) is not conserved in this collision because some mechanical energy is lost as heat in the collision.
The principle of conservation of momentum is not satisfied, since the sum of external forces is not equal to zero, if the ball falls the net force is equal to the weight, makes the ball Vary your speed and therefore their momentum.
Planetary orbits are a balance between gravity, which pulls them toward the Sun, and inertia that keeps them moving forward in the same direction as they are going now. Inertia causes the planets to keep moving just as before, but gravity pulls them toward the Sun. As the planets fall toward the Sun, the inertia (more properly called "momentum") keeps making the planet miss the Sun as it is falling.
The momentum of a moving body is defined as the product of its mass and velocity. Notice that since 'velocity' has a direction as well as a magnitude (is a vector quantity), momentum also has direction as well as magnitude. That's why two billiard balls, moving toward each other each with the same exact speed, can completely stop dead after the collision ... since their velocities are in opposite directions, their momentums are also exactly opposite, and add up to zero.
The momentum between two identical balls traveling toward each other at the same speed from opposite directions is zero. This is because they have equal and opposite momentums which cancel each other out.
The planets orbit because of gravity and their momentum. They are constantly flying away from the sun, but at the same time are being pulled toward it by gravity. The end result is that they stay moving in a circular motion around the sun.
If you're only looking at Bronco, then it certainly seems to, doesn't it. That's because you're only looking at a part of the system, not the whole system. The whole system is the combination of Bronco and the Earth. When Bronco releases his grip on the helicopter's skid, and begins to fall, you have to look at both sides of the system. There is a pair of mutual, equal gravitational forces, attracting Bronco and the Earth toward each other, so both objects accelerate toward each other. The accelerations are in inverse proportion to the masses, so Bronco picks up somewhat more speed toward the Earth than the Earth picks up toward Bronco. But both of them are moving toward their common center of mass, and they're obviously moving in opposite directions. Bronco's speed multiplied by his mass is his momentum, directed downward. The Earth's tiny speed, multiplied by its large mass, is its momentum, directed upward. They're equal, and they're opposite, and they add up to zero, just like the momentum of the system before Bronco jumped. QED
The momentum of the baseball can be calculated using the formula: momentum = mass x velocity. Plugging in the values, we get momentum = 0.148 kg x 35 m/s = 5.18 kg·m/s. So, the momentum of the baseball thrown toward home plate is 5.18 kg·m/s.
The only thing that matters is the RELATIVE Velocity between the two Objects, not whether they are BOTH moving or not. If one is standing still and the other going 100 MPH, the result is the same as if both were going 50 MPH.
Going toward
Due to the doppler effect, objects moving toward us will be slightly more red than what they actually are, and objects moving away will be slightly more blue. Think of it like a siren coming toward you and moving away from you. If it is moving toward you, it will be slightly higher than what it really sounds like. If it is moving away it will have a slightly lower pitch.
you can't see it moving because your moving with it