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forces
| Question | Answer |
|---|---|
| the greater the mass, the greater intertia | more force is needed |
| What is force | A push or pull on an object |
| Force causes “things” to | Change speed or change direction |
| Force is measured in | Newtons (N) |
| Balanced forces are when | All forces acting on an object are balanced Net=0 |
| What happens with speed with balanced forces? | There is no speed, NO acceleration, no motion |
| When all forces are equal in size and are pointed in the opposite direction. They balance each other and cancel each other out | Balanced forces |
| When one force is greater than the opposing force, net does NOT equal zero, There must be a change in direction OR a change in speed | Unbalanced forces |
| Adding forces | Two forces are added together to produce a larger net force than the original force. Forces are pointed in the SAME direction |
| Is adding forces an unbalanced or balanced force | Unbalanced, same direction, positive acceleration (gets faster) |
| Is subtracting forces an unbalanced or balanced force | Unbalanced, opposite direction, negative acceleration (gets slower) |
| Is pushing an unbalanced or balanced force | Balanced, no acceleration |
| Is pulling an unbalanced or balanced force | Balanced, no acceleration |
| Subtracting forces | Two forces can subtract a net force in the direction of the larger force. A force in one direction is grater than the force in the opposite direction resulting in the difference between the 2 forces |
| a car tire pushes on the road, and the road pushes back on the tire | newtons 3rd law |
| the harder you hit a baseball, the further the ball travels | newtons 2nd law |
| the magician quickly pulls the tablecloth from under a set of dishes. the dishes dont move | newtons 1st law |
| air is released from a balloon. the air pushes down, and the balloon goes up | newtons 3rd law |
| a soccer ball will stay where it landed until a prson kicks it | newtons 1st law |
| a cannon moves backward as the cannonball shoots out | newtons 3rd law |
| the planets resist a change of motion and continually orbit the sun | newtons 1st law |
| how much an object accelerates depends on the mass of the object and the force applied | newtons 2nd law |
| for every action, there is an equal and opposite reaction | newtons 3rd law |
| an object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an unbalanced force | newtons 1st law |
| it is easier to push an empty shopping cart rather than one that is full of groceries | newtons 2nd law |
| a skateboarder hits a rock and is thrown over it onto the ground | newtons 1st law |
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user-1809752