Car 1 of mass 1.30 x 10° kg travels due west at a speed of 43.0 m/s before colliding with parked car 2 of mass 1.70 × 10ª kg. After the collision, car 1 moves in the direction of 33.0° north of west while car 2 moves in the direction of 27.0° south of west. (4) What is the speed of car 1 after the collision? (A) 20.5 m/s; (B) 21.5 m/s; (C) 22.5 m/s; (D) 23.5 m/s; (E) 24.5 m/s. (5) What is the speed of car 2 after the collision? (A) 20.7 m/s; (B) 21.7 m/s; (C) 22.7 m/s; (D) 23.7 m/s; (E) 24.7 m/s. (6) How much mechanical energy is lost during the collision? (A) 307 kJ; (B) 357 kJ; (C) 407kJ; (D) 457 kJ; (E) 507 k.J.

Car 1 of mass 1.30 x 10° kg travels due west at a speed of 43.0 m/s before colliding with parked car 2 of mass 1.70 × 10ª kg. After the collision, car 1 moves in the direction of 33.0° north of west while car 2 moves in the direction of 27.0° south of west. (4) What is the speed of car 1 after the collision? (A) 20.5 m/s; (B) 21.5 m/s; (C) 22.5 m/s; (D) 23.5 m/s; (E) 24.5 m/s. (5) What is the speed of car 2 after the collision? (A) 20.7 m/s; (B) 21.7 m/s; (C) 22.7 m/s; (D) 23.7 m/s; (E) 24.7 m/s. (6) How much mechanical energy is lost during the collision? (A) 307 kJ; (B) 357 kJ; (C) 407kJ; (D) 457 kJ; (E) 507 k.J.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

Car 1 of mass 1.30 x 10 kg travels due west at a speed of 43.0 m/s before colliding with parked
car 2 of mass 1.70 x 10° kg. After the collision, car 1 moves in the direction of 33.0° north of
west while car 2 moves in the direction of 27.0° south of west.
(4) What is the speed of car 1 after the collision?
(A) 20.5 m/s; (B) 21.5 m/s; (C) 22.5 m/s; (D) 23.5 m/s; (E) 24.5 m/s.
(5) What is the speed of car 2 after the collision?
(A) 20.7 m/s; (B) 21.7 m/s; (C) 22.7 m/s; (D) 23.7 m/s; (E) 24.7 m/s.
(6) How much mechanical energy is lost during the collision?
(A) 307 kJ; (B) 357 kJ; (C) 407kJ; (D) 457 kJ; (E) 507 k.J.

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