Consider a head-on elastic collision between two objects. object 1, which has mass m1, is initially in motion, and collides head-on with object 2, which has mass m2, and is initially at rest. which of the following statements about the collision are true? a) |p1,final| < |p1,initial|b) if m1 > > m2, then the final speed of object 2 is less than the initial speed of object 1.c) if m2 > > m1, then |delta p1| > |delta p2|d) if m2 > > m1, then the final speed of object 1 is greater than the final speed of object 2.e) p1,initial = p1,final + p2,final

Acommon technique in analysis of scientific data is normalization. the purpose of normalizing data is to eliminate irrelevant constants that can obscure the salient features of the data. the goal of this experiment is to test the hypothesis that the flux of light decreases as the square of the distance from the source. in this case, the absolute value of the voltage measured by the photometer is irrelevant; only the relative value conveys useful information. suppose that in part 2.2.2 of the experiment, students obtain a signal value of 162 mv at a distance of 4 cm and a value of 86 mv at a distance of 5.7 cm. normalize the students' data to the value obtained at 4 cm. (divide the signal value by 162.) then calculate the theoretically expected (normalized) value at 5.7 cm.