Physics

Period 2 Period 7

Answers to White HW Packet

A. Perfectly Inelastic Collisions 1. 2.9 m/s 2. 85 kg 3. -0.5 m/s (same as the initial direction of 3 kg glider)

B. Inelastic and Elastic Collisions 1. v2f = 0.85 m/s, direction the same as the truck 2. 3 m/s 3. 26.8 cm/s 4. same 5. -12000 kg*m/s 6. -0.6 m/s, it's elastic because KE is conserved

C. Explosions 1. -0.5 m/s 3. -0.9 m/s 6. -0.044 m/s 7. 18 ft

Review 1. a) 3.75 m/s b) 375 N 2. -175000 N 3. 18 m/s 4. -0.46 m/s NEW 5. -10. m/s 6. 9.4 m/s 7. 2.7 m/s 8.-9. 100 N*s 10. 100 N*s 11. -8 m/s 12. 625 N with sf correct 600 N 13. 0.5 N*s 14. 200 N 15. -200,000 m/s^2 16. 0.1 m/s