The class I'm taking is physics for scientists and engineers!I am completely stuck. Need help. I have attached the problem. Please view both attachments before answering.*****I need help with parts D and F please. *********please use SI units and report the numeric part only for all answers!***I have also attached the links to BOTH videos below. If you can please explain your answer so I can fully understand. Thank you so much!Link: https://youtu.be/eK7dMnnElx8Link: https://youtu.be/4IYDb6K5UF8 In this video:Link epart Aat around 1:30 she shows an elastic collision of carts withunequal masses.Assume the mass of the left cart is 3 kg and the right cart is 1kg.If:• initial velocity of the left cart is 1 m/s• initial velocity of the right cart is -2 m/s• final velocity of the left cart is -0.5 m/sthen, what is the velocity of the right cart after it bouncesback? Include the sign to indicate direction.You should use the formula sum of momentum before equalssum of momentum after:momentuminitial = momentumfinalsince momentum = (mass)(velocity) = mv, the sum becomes:mLVL_initial + MRVR_initial = mL VL_final + MRVR_finalpart BFor an elastic collision, the total energy before and after shouldbe the same. The kinetic energy is:KE = (1/2)(mass)(velocity)?What is the total energy before the collision?To get the total energy before, you need to add the energy ofthe left and right cart. In SI units, your answer will be in Joules,but please report just the numeric part.part CWhat is the total energy after the collision?Again please use Sl units and report the numeric part. part DNow, imagine we run the experiment again, this time withvelcro between the carts so that they stick together (like thevelcro from the international space station video).In this case, both carts stick together and move with the samespeed. The conservation of momentum equation becomes:MLVL_initial + MRVR_initial = (ml +mr)VfinalWhat is Vfinal?What is the total initial kinetic energy in the velcroexperiment?Use:part EKE = (1/2)(mass)(velocity)2What is the total final kinetic energy in the velcro experiment?Use:KE = (1/2)(mass)(velocity)?part FIn both experiments, we say that momentum was conserved,meaning the total quantity was the same before and after.Based on your calculations, was energy conserved in thecollisions?Which ones?part GWhy do you think this is the case?

Answered: Image /qna-images/answer/360f6388-e591-4fb7-ad0b-d15a2d0f2ea5.jpg

part D Now, imagine we run the experiment again, this time with velcro between the carts so that they stick together (like the velcro from the international space station video). In this case, both carts stick together and move with the same speed. The conservation of momentum equation becomes: MLVL_initial + MRVR_initial = (m + mr)Vinal What is Vinal? What is the total initial kinetic energy in the velcro experiment? Use: part E KE = (1/2)(mass)(velocity)2 What is the total final kinetic energy in the velcro experiment Use: KE = (1/2)(mass)(velocity)? part F

part D Now, imagine we run the experiment again, this time with velcro between the carts so that they stick together (like the velcro from the international space station video). In this case, both carts stick together and move with the same speed. The conservation of momentum equation becomes: MLVL_initial + MRVR_initial = (m + mr)Vinal What is Vinal? What is the total initial kinetic energy in the velcro experiment? Use: part E KE = (1/2)(mass)(velocity)2 What is the total final kinetic energy in the velcro experiment Use: KE = (1/2)(mass)(velocity)? part F