Apparatus 1: what is the relationship between height of release and the initial velocity?
Apparatus 2: What is the relationship between length of the ball catcher and the final velocity of the system?
Additional question: What is the percentage error of the initial velocity calculated using momentum and kinematics? Percentage error between theoretical initial velocity and experimental initial velocity? How much energy is lost?
note: the initial velocity calculated using kinematics should equal to the initial velocity calculated using momentum, meaning the initial velocity in apparatus 1 should equal to the initial velocity on apparatus 2.
Background:
In this lab I will be exploring and examining not only inelastic collision, but also momentum and energy. I made my own model of the ballistic pendulum, using toy gun, retort stand and a handmade ball catcher. I will take out the ball catcher from the pendulum and fire the ball, and find the height of the toy gun above the floor before release and the horizontal distance that the ball landed, then I can calculate the initial velocity using kinematics, refers to apparatus 1. The use of kinematics, dv= vit+½ at2 and dh=vt to calculate the initial speed of the ball after …show more content…
Through the dramatic enactment, we can see that momentum is not conserved at that moment and when the bullet is fired, the recoil speed of the gun on the shooter affect the shooter, in which he or she will move backward. This involves elastic or inelastic collision of two objects and law of conservation of momentum. Both inelastic and elastic collision and conservation of momentum can be seen everywhere, it can be seen when pool balls are colliding with one another, curling and when actors when being shot by