The earth, the sun, and the rest of the solar system are almost unimaginably old when viewed on a human time scale. while modern humans first evolved approximately 200,000 years ago, the age of the earth, the sun, and the rest of the solar system is approximately years. a 100,000 b 4.6 billion c 4.6 million d 200,000

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.