Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
JM's forces
my forces
| Question | Answer |
|---|---|
| Force | a push or a pull |
| units of force | Newtons, N |
| Net force | the total of all forces acting on an object |
| balanced force | the net force acting on an object is 0 |
| unbalanced force | the net force acting on an object is not 0 |
| magnitude | the amount of measurement |
| momentum | the product of an objects mass and its velocity |
| formula for momentum | mass of object x velocity of object |
| law of conservation of momentum | the principle of momentum of any group of objects remains constant unless outside forces also act on the objects. |
| inertia | the tendency of matter to resist a change in its motion |
| static friction | the force that occurs when two surfaces touch each other. |
| kinetic friction | the force that occurs when two surfaces move against each other. |
| sliding friction | occurs when two flat surfaces rub against each other. |
| fluid friction | occurs when an object moves through water or air |
| rolling friction | occurs when an object rolls over a surface |
| newtons first law of motion: the law of inertia | Forces are always produced in pairs, with opposite directions and equal magnitudes. |
| Newtons second law of motion | forces are opposing; the net force on the object is equal to the product of the object's mass and acceleration. |
| Third law of motion | if one object exerts a force on another object, the the second object exerts a force of equal strength in the opposite direction on the first object. |
| law of universal gravitation | all objects in the universe attract each other, the size of the force depends on mass of the objects and the distance between the objects |
| freefall | the motion of an object when gravity is the only force acting on the object |
| Terminal velocity | the greatest velocity of a particular falling object where the force of gravity is equal to the force of air resistance. |
| weight | the measure of the force of gravity on an object |
| mass | the amount of matter in something |
| centripetal force | any force which causes an object to move in a circle. this force is always directed toward the center of the circle |
| geosynchronous orbit | satellites orbit the earth at the same rate as the earth rotates, therefore, a a satellite is always above the same spot on the earth |
Created by:
juliakay
Popular Physical Science sets