Momentous Design Lab
name :sonia malini
Date of investigation: 8 September, 15 September 2009
Date of submission: 29 September 2009
The main purpose of the experiment is to investigate validity of the conservation of linear momentum from three main different types of momentum, namely: head on collision of equal masses, head on collision on unequal masses and exploding carts.
In the 17th century, Isaac Newton was the one who realized that the momentum is conserved in collision. Momentum is the product of mass and velocity (direction). In the other way, momentum is also a vector so the direction is important to the determination of the total momentum of a system of objects. Furthermore, the laws of the conservation of momentum infer that the total momentum of a system of objects before collision and after collision remain the same. Therefore, if two objects collide, the total momentum before collision is equal to the total momentum after the collision. The total system of momentum is conserved for collision between objects in an isolated system.
The conservation of momentum is written as:
P ⃗T¬¬¬o= P ⃗Tf
However, the velocities of the objects involved in the collision can change in both magnitude and also direction. There are two types of collisions which are elastic, where the object are only contact with each other in a short period of time, and elastic where they remain fixed together and move as one object which means they have the same velocity.
The equations for the conservation of momentum are given below. Where I and f are initial and final, m is the mass of the objects, and v is the velocity of the objects.
Elastic Collision: m1v1i+m2v2i=m1v1f+m2v2f
Inelastic: m1v1i+m2v2i= (m1+m2)vf
While for explosion, the same principle of momentum conservation can be applied to explosions. In an explosion, an internal impulse acts in order to propel the parts of the system (object) into a variety of directions. Before