Question

1. when two objects rub against each other it creates this. friction
2. an object tends to keep moving because it has this quality.
3. newtons first law of motion is also called the law of.
4. the more of this an object has, the more force it takes to move it.
5. the speed and direction of a moving object.
6. everything gets pulled down toward the earths center because of this force.
7. this is the result of unbalanced forces making an object speed up.
8. what you get when you multiply an objects mass times the acceleration.
9. the scientist who came up with the three laws of motion.
10. a skier at the top of a hill has more energy than a skier at the bottom.
11. another word for potential energy.
12. a skier traveling downhill has this type of energy.
13. when two forces acting on an object are equal, they are.
14. when two forces are, there is a change in position or motion.
15. when two balanced forces cancel each other out, they are in.
16. when the velocity of a moving object stays the same, it has a speed.

Explanation:

1. Friction occurs when two objects rub against each other.
2. Inertia is the property that makes an object tend to keep moving.
3. Newton's First Law of Motion is also called the law of Inertia.
4. Mass: more mass means more force to move.
5. Velocity is speed and direction of a moving object.
6. Gravity pulls everything toward Earth's center.
7. Acceleration results from unbalanced forces speeding up an object.
8. Force = mass × acceleration (Newton's second law).
9. Newton came up with the three laws of motion.
10. A skier at the top has more potential energy.
11. Another word for potential energy is stored energy.
12. A downhill - traveling skier has kinetic energy.
13. Equal forces on an object are balanced.
14. Unbalanced forces cause a change in position/motion.
15. Balanced forces that cancel are in equilibrium.
16. Constant velocity means constant speed.

Answer:

1. Friction
2. Inertia
3. Inertia
4. Mass
5. Velocity
6. Gravity
7. Acceleration
8. Force
9. Newton
10. Potential
11. Stored
12. Kinetic
13. Balanced
14. Unbalanced
15. Equilibrium
16. Constant