Chapter11 lesson2

Science 5th hour

Concept 1: Newtons laws

Concept 2: Newtons law of universal gravitation

The sun, moon, and everything in the universe has a gravitational force. In space there is nothing so there is no gravity.

Concept 3: conservation of momentum

Momentum = mass + speed, Total momentum does not change when objects collide. Scientists call this principle: Conservation of Momentum
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