Preliminary questions

× PI Lab 9 impulse and Momentum.pdf net force on the object, but .n the case where ce e fece denies all edes it詠suficient to use only the large force in calculations and analysis For this experiment, a dynamics cart will roll along a level track Its momentum will change as it reaches the end of an initially slack elastic tether cord, much like a horinontal bungee jump. The force until the cart stops. The cart then changes The fece applied by the cord measured by a Force cther will streich and direction and the tether will soon go Sensor. The cart velocity throughout the motion is measured with a Motion Detector Using LabQuest to find the average force during a time interval, you can test the impalse-momentum theorem. Figure 1 OBJECTIVES .Measure a cart’s momentum change and compare to the impulse it receives Compare average and peak foeces in impulses MATERIALS LabQuest App Motion Detector Vermicr Force Sensor dynamics cart and track clastic cond 500 g mass PRELIMINARY QUESTIONS 1. In a car collision, the driver’s body must change speed fom a high valae to azero. This is true whether or not an airbag is used, so why use an airbag? How decs it rodace injuries? 2. You want to close an open door by throwing cither a 400 g lump of clay or a 400 g rubber ball tomard·L You can throw either object with the same speed but they are átrent in that the nubber ball bounces off the door while the clay just sticks to the door. Which projectile will apply the larger impulse to the door and be more likdly to close i?