For a completely inelastic collision, the fractional change in kinetic energy can be found as a function of the masses of the projectile and target carts only. (a) show in detail that the fractional change in kinetic energy is given by ∆('() '(* = (' '(*) '(* = − / (01/) . (b) what is the significance of the negative value for the fractional change in kinetic energy? (10 pts)

ill do it for 100, also this isnt 80 its 40

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

i'm on my way to history not a mistory.