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Science Force Test
75 Point
| Question | Answer |
|---|---|
| Force means? | a push or a pull |
| Newton means? | the strength of a force |
| Net Force means? | the combination of all forces acting on an object |
| Unbalanced force means? | whenever there is a net force acting on an object |
| Balanced force means? | equal forces acting on one object in opposite directions |
| Friction means? | the force that two surfaces exert on each other when they rub against each other |
| Static Friction means? | the friction that acts on objects that are not moving |
| Sliding Friction means? | occurs when two solid object slide over each other |
| Rolling Friction means? | when an object rolls across a surface |
| Fluid Friction means? | when a solid object moves through a fluid |
| Gravity means? | a force that pulls objects toward each other |
| Mass means? | a measure of the amount of matter in an object |
| Weight means? | the force of gravity on a person or object at the surface of a planet |
| Free Fall means? | when the only force acting on an object is gravity |
| Air Resistance means? | objects falling through air experience this kind of fluid friction |
| Terminal Velocity means? | the greatest velocity a falling object reaches |
| Projectile means? | an object that is thrown |
| What is the formula for acceleration? | acceleration=net force/mass |
| Inertia means? | the tendency in an object to resist a change in motion |
| What is the formula for momentum? | momentum=mass*velocity |
| Momentum means? | a characteristic of a moving object that is related to the mass and the velocity of the object |