Two objects make up a closed system and have an elastic collision with each othe

Question

Two objects make up a closed system and have an elastic collision with each other. The table below shows their total energies 10 s before the collision, just before the collision, and just after the collision. Fill in the empty cells in the table.

                    10s before the collision || Just before the collision || Just after the collision

KE of object 1 (J): 1000                                  X                                  1350

KE of object 2 (J): 600                                  900                                  X

Total PE of both objects (J) 600                      450                                  X

Total thermal energy of both objects (J) 50       250                                  350

Explanation / Answer

Since energy is not lost in elastic collision and kinetic energy remains as the same kinetic energy before and after the collision

Initial total energy = 2250 j

1 ) Therefore KE OF OBJ 1 = 650 J

2 )KE of OBJ 2 = 200j

3)TOTAL PE OF OBJ = 350J

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.