Physics lab report Collision 2D.

Objective:

The purpose of this experiment is to investigate the collision of two pucks in two dimensions. We also need to figure out if momentum translation, rotational energy and potential energy are conserved for both elastic and inelastic collisions.

Experimental Data:

In this section you should provide values of d and R and fill the table. If you managed to compose this table during a lab, then just copy the respective values. Values for velocities are just slopes of graphs you got at a lab.

d = distance between a center and a white dot of a puck =

R = radius of a puck =

m1 = m2 = mass of a puck =

Remember to provide units for all values in the table! Add columns as necessary.

Elastic case

Before Collision	After Collision
Red, center	Blue, center	Red, center	Blue, center
V1xi	V1yi	V2xi	V2yi	V1xf	V1yf	V2xf	V2yf

Inelastic case

Before Collision	After Collision
Red , center	Blue, center	Joint of two pucks	Center of one puck	White dot
V1xi	V1yi	V2xi	V2yi	Vjointx	Vjointy	Vcenterx	Vcentery	V1wdx	V1wdy

Data analysis:

You can either type or handwrite this section.

Do not write any words, definitions and etc. only formulas and numbers.

You do not need to provide calculations for momentum in an inelastic case and for energy for an elastic case. However, you need to show the results for this values in results section.

In this section you should provide the following calculations (a formula, substitutions and a numerical answer with units):

Elastic collision:

1) X component of total momentum of the two pucks before the collision

2) Y component of total momentum of the two pucks before the collision

3) X component of total momentum of the two pucks after the collision

4) Y component of total momentum of the two pucks after the collision

5) percentage lost in the X component of total momentum

6) percentage lost in the Y component of total momentum

Inelastic collision:

1) Total kinetic energy of the two pucks before the collision.

2) Total kinetic energy of the two pucks after the collision. Remember to calculate the rotational kinetic energy.

3) percentage lost in the kinetic energy during the collision.

Results:

Provide initial and final values for momentum and kinetic energy for elastic and inelastic collisions. Show percentage change in these two physics values. Provide units.

Elastic case	Initial	Final	Percentage change
Kinetic energy, UNITS
X component of total momentum with error, UNITS
Y component of total momentum with error, UNITS

Inelastic case	Initial	Final	Percentage change
Kinetic energy, UNITS
X component of total momentum with error, UNITS
Y component of total momentum with error, UNITS

Discussion and conclusion:

This section should include five paragraphs. 1 page long limit!!!!!

1) Restate the objective of the experiment. 2 sentences limit!

Expalin the theoretical concept that is being studied.

2) Describe two experiments you studied. Mention how you got values for velocities. 5 sentences limit.

3) Provide the results from previous section. Explain what collision was elastic and what collision was inelastic. 5 sentences limit!

4) Discuss all possible sources of errors, and explain why your results deviate from the predictions. 6 sentences limit!

5) Conclude whether the laws you studied were proved or disproved by the experiment. 3 sentences limit!

Remember to submit the graphs with all experimental data.