Question

apuauadxa inoA Analysis Question Your Answer What are some factors that contributed to your standard Q3 deviation? (In other words, source Your answer for Q3 here of error.) What could you have done in order to reduce the spread in your Q4 data? (In other words, have had a Your answer for Q4 here smaller standard deviation.) The value of the coefficient of restitution depends properties of both objects Q5 involved in the collision. How could you have produced a collision that gives a lower coefficient of restitution? on the Your answer for Q5 here Provide a real-life example of Q6 where you can see different Your answer for Q6 here coefficients of restitution at work. What is something that you gained (knowledge, experience, Q7 awareness, etc.) that you did not Your answer for Q7 here have prior to completing the experiment?

I used a bouncy ball and a 100 cm ruler to find the coefficient of restitution

Answer 1

5)

Relativevelocityafter velocity UbVa CR Relativevelocitybe forvelocity

To attain minimum value of CR we have to set the collision scheme in such a way that Relative velocity of particles after collision can be decrease.

When colliding objects do not have a direction of motion that is in line with their centers of gravity and point of impact or if their contact surfaces at that point are not perpendicular to that line, then some energy would be lost in rotation and friction. So CR decreases.

6)

Real life example:

If we collide two glass balls and at the same time two rubber ball with same initial relative velocity, after the collision glass balls move away from each other with higher velocity than rubber balls.

Reason:

Reason behind this is that rubber balls get more deformed and a lot of energy stored in deformed state. after balls come to actual state the restore of energy not be complete. so they have less relative velocity after collision compared to glass ball.

Finally, CR(glass balls) > CR(rubber balls)

7)

Knowledge:

Actually, from previously discussion proved a thing that coefficient of restitution for any perpendicular material would not remain same. It depends on material as well as velocity of approach.

Experience:

From my experience the coefficient of restitution depends basically on rigidness of material. i.e. elastic coefficient.

Please post the remaining questions in another post.