Impulse and momentum lab Need help with question 9 10 pleas

Connect the cart and the force sensor with each of the elastic materials in the table below, one at a time. Iry to push the cart away from the force sensor with the same speed for each trial. Record the the cart with the appropriate sign to indicate its direction. Use the measure of the uncertainty and record the velocities in the format v 6o, rounded velocities of standard deviation of the velocity as Record the appropriate sign to indicate the direction. The force sensor Use the signs from maximum force measured by the sensor and the average force during the \"collision\" with the will only give the magnitude, not the direction. the velocity measurements to determine which direction is the positive direction. to determine which direction is the positive direction 492 40 1. Mass of cart: 2. Table 1: Measured velocities, forces, and duration of the collisn fot each kind of elastic material. Elastic F. t (s) Yellow 030on 10-03 Yarn Thread 2. 3. Table 2: Calculate the initial momentum, final momentum, change in momentum, and the impulse on the cart for each type of elastic material. Record the momenta and change in momentum in the format p± op, rounded appropriately. Calculate the impulse using the definition of inpulse: J-/ZFdt. Finally, calculate the percent error in the change in momentum relative to the impulse (take the impulse to be the \"actual\" value in this calculation) Elastic p, (kg) J (Ns) % error Yellow Yarn Rubber 4. For each type of elastic material, are your results consistent with the impulse-momentum theorem (Y /N)? In the space below, briefly explain what criterion you used to determine if your results were consistent Yellow Fishing Fishing Rubber

Solution

The elsticity can be compared by studying the differences in speed (magnitude) of cart before and after collison. The more elastic the material, closer will be the two values:-- e = v(after collison)/v(before collison)

for yellow : e = 17/28 and 22/36 = 0.6

for fishing: e = 19/26 and 26/37 = 0.72

for yarn: e = 29/54 and 42/77 = 0.54

for thread : e = 32/50 and 23/33 = 0.65

for rubber: e = 28/31 and 33/43 ~ 0.8

so: rubber > fishing > thread > yellow > yarn

10) --- The addition of extra mass implied that for the same speed now the momentum of the carts will be higher ==> To hit it back more impulse will be needed as J = | p_in | + | p_out |

From the given data , its not possible to make a comment in the effect on time interval and average force