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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 |