Repeat the experiment twice once with the steel

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8.Repeat the experiment twice: once with the steel weight added to the target cart (m1< m2) and once with the steel weight added to the projectile cart (m1> m2). If a speed is recorded twice, pay attention to which photogates were entered by each cart and the order in which they were measured. Because velocity is a vector, also indicate with a minus sign any speeds that went “backwards.” Recordthese velocities with signs on your datasheet in Data Table 1. Inelastic Collisions 9.Flip the target cart so that its nonmagnetic side with Velcro faces the projectile cart’s Velcro sideand install the flag appropriately. Repeat the experiment and record the velocities on your data sheet in Data Table 1. Explosions 10.Flip the projectile cart so that its non-Velcro nonmagnetic side faces the target cart. The target cart has a spring-loaded plunger. Push it in “one click” and butt the carts against each other with their flags between the photogates. (The nonmagnetic cart should be aimed forward through Photogate 2 and the magnetic cart should be aimed backwards through photogate 1.) Use the steel weight to gently tap the trigger. Measure and record the final velocities of both carts in Data Table 1 (remember signs!). Wrap-up 11.Remove the target cart and send only the projectile cart down the track roughly with the same speed that you used in the collision experiments. Measure and record the velocities through both photogates in Data Table 1 12.Measure and record the masses of the projectile cart (with its flag), the target cart (with its flag) and the steel weight in Data Table 2. ANALYSIS1.Calculate the momentum and kinetic energy of each cart in every interaction and record your results in Data Table 3. Show a sample calculation for at least one case of each and label which case it is. This is a good opportunity to split the work up amongst your lab partners, or use the pre-programmed momentum and energy calculator spreadsheet in Excel posted to Moodle. CAUTION: Make sure you account for the steel weight in the total mass for cases in which you used it! 2.From your results in Data Table 3, calculate the totalmomentum and kinetic energy of the cart system before and after the event (collision, explosion, or passing from gate-to-gate). Record your results in Data Table 4. Show your work for at least one case and indicate which case it is. 3.From your results in Data Table 4, calculate the percent change in total momentum and kinetic energy from before to after the event. Record your findings in Data Table 5. Show your work for at least one case and indicate which case it is. Percent change is included as an added function to the pre-programmed spreadsheet.
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