1. Laws of Motion Vocab2 8 th grade Science - Fremont

2. Inertia The tendency of an object to resist change in motion.

3. speed speed is calculated by dividing distance by time. Example: mile per hour

4. Velocity is speed (distance over time) plus DIRECTION. example: 35 mph North

5. Acceleration is a change in velocity example: speeding up, slowing down, or changing direction

6. friction a force caused by two surfaces rubbing together and works against the motion.

7. Weight the measurement of the gravitational pull on an object.

8. Air resistance a force that opposes the motion of objects through the air.

9. Projectile An object that has both horizontal & vertical motion as it follows an arched path due to gravity & the force of being “thrown,”

10. Centripetal force a force that causes an object to follow a curved path.

11. Gravity a force of attraction between objects which depends on the mass of the objects & how close they are to each other.