# If two identical cars are traveling at different velocities which car has the greater momentum?

Momentum is equal to the product of mass and velocity, so if the mass is equal, the one with greater velocity has greater momentum.

### What is the total momentum between two identical balls traveling toward each other at the same speed from opposite direction?

They have identical momentum before the collision . The total momentum will the the same before and after the collision. When the balls collide they will bounce apart both with same force and so the same momentum as originally - but in opposite directions. This assumes no energy loss in an ideal elastic collision.

### Why do you need momentum?

Momentum is defined as the "Mass in Motion". It is a Vector quantity. It depends on two variables (Object Mass and Velocity) . Its direction is same as objects velocity direction. In physics momentum is required to specify the motion of the object . If two bodies of same masses having different velocities have different momentum , in a similar way bodies of different masses having same velocity have different momentum. So , in order…

### If two objects have the same momentum do their velocities necessarily have the same directions?

=== === Since momentum is a vector and not a scalar quantity, to have the same momentum, they must have the same direction. Remember, vectors have magnitude and direction. Speed is the magnitude part of velocity. Since momentum is the product of mass (a scalar) and velocity (a vector) if two objects are moving in different directions, even if they have the same mass and speed, their momentums are different.

### Would a 34 kg ball moving at 8 ms have a greater or lower momentum than the 35 kg ball?

If both balls are moving at the same speed (velocity), the heavier (more massive) will have the greater momentum. Momentum is the product of mass and velocity. With identical velocities, the more massive object will have the greater momentum. If a 34 kg ball and a 35 kg ball are both moving at 8 m/s as asked, then the 34 kg ball will have less momentum than the 35 kg ball.

### Is it possible to have more kinetic energy but less momentum Less kinetic energy but more momentum support your answer?

The answer to both of your questions lies in the different nature of both quantities, momentum and kinetic energy. Momentum is a vector, kinetic energy is a scalar. This means that momentum has a magnitude and a direction, while kinetic energy just has a magnitude. Consider the following system: 2 balls with equal mass are rolling with the same speed to each other. Magnitude of their velocities is the same, but the directions of their…

### How do you find final velocity given mass of both objects and there initial velocities and one of their final velocities?

Suppose the two masses are m1 and m2. Their initial velocities are u1 and u2 and final velocities are v1 and v2. Then, using conservation of momentum. m1*u1 + m2*u2 = m1*v1 + m2*v2 Both m1 and m2 are given. Their initial velocities u1 and u2 are given and one of the two final velocities v1 and v2 is given which leaves only one unknown. So substitute all those values and calculate away.

### Which has greater momentum a heavy truck or a moving automobile?

Momentum depends on both mass AND velocity. So if they are both going the same speed the truck would have more momentum. However, a car traveling at 44.7m/s (100mph) could have more momentum that a truck traveling at 0.1m/s p = m * v Momentum (p) is equal to the mass (m) of the object times its velocity (v). All in SI units.

### What happens to kinetic energy when you decrease the mass?

Kinetic energy = K.E. = 1/2 (m)(v)2. Since mass, m, is part of this equation, we see that two particles of equal velocity but of different masses have different kinetic energies. In the case of equal velocities, the particle with the lesser mass will have the lower kinetic energy. Remember that momentum is the derivative of K.E., and so the momentum of an object is also related to the mass of an object as well.

### What is the law of consevation of momentum means?

Mass is the measure of how much matter an object is made from. Velocity is the speed of an object in a particular direction. Momentum is the the Mass of an object multiplied by its velocity. A stationary object with a mass of 1 and velocity of 0 has a momentum of 0 because 1 X 0 = 0. An object of mass 1 and velocity 2 has a momentum of 2 because 1 X…