Question

7. [0/7 Points] DETAILS PREVIOUS ANSWERS SERCP11 6.A.P.063.MI. MY NOTES PRACTICE ANOTHER A 2.0-9 particle moving at 9.0 m/s makes a perfectly elastic head-on collision with a resting 1.0-g object. (a) Find the speed of each particle after the collision. 2.0 g particle X Apply momentum conservation and assume a head-on elastic collision to find the final velocities from the initial velocities. m/s m/s 1.0 g particle (b) Find the speed of each particle after the collision if the stationary particle has a mass of 10 g. 2.0 g particle m/s 10.0 g particle m/s (c) Find the final kinetic energy of the incident 2.0-9 particle in the situations described in parts (a) and (b). KE in part (a) u KE in part (b) J In which case does the incident particle lose more kinetic energy? case (a) case (b)

Answer 1

# m, = 2g 1 = 3mis . + m2= Ig = a mis V2 =0 m, o,+ m, U = m, vit m₂ V2 [ momentum 249 avtrz conservation 2V + V 2 =18 -O e=V2-V, U-Uz Vz-v, = 9 28, +V2 =12 -36 Vp 797 » V = 3mis Vq = 3 mis le 12 m/s V. 3mis Vz = 12mls if m2=10g. Qvitio V2 =18 - 2V2 V182= 9x2 1282 = 36 V2 z 3 mis VI .6mis -omis V2 3mis KE in part a **2*133310-2 9X10 Joule 2 K E in part ① =442810**x(6)?= 36110 Joule Incident particle loss more Core when, Ir, = 3 m/s 7 -3 = energy in first Case @

# m, = 2g 1 = 3mis . + m2= Ig = a mis V2 =0 m, o,+ m, U = m, vit m₂ V2 [ momentum 249 avtrz conservation 2V + V 2 =18 -O e=V2-V, U-Uz Vz-v, = 9 28, +V2 =12 -36 Vp 797 » V = 3mis Vq = 3 mis le 12 m/s V. 3mis Vz = 12mls if m2=10g. Qvitio V2 =18 - 2V2 V182= 9x2 1282 = 36 V2 z 3 mis VI .6mis -omis V2 3mis KE in part a **2*133310-2 9X10 Joule 2 K E in part ① =442810**x(6)?= 36110 Joule Incident particle loss more Core when, Ir, = 3 m/s 7 -3 = energy in first Case @