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Newton's Laws
These are flashcard for the unit of Newton's Laws
| Question | Answer |
|---|---|
| For every action, there is an equal and opposite reaction. | 3rd Law |
| What is the equation FORCE | f=ma |
| The motion of an object will not change is the net force is ZERO (inertia) | 1st Law |
| What is the gravitational force on any object near Earth's surface? | 9.8 m/s/s |
| Gravitational force is influenced by what TWO factors? | mass and distance |
| ______ is the force that will oppose any body or object in motion. | Friction |
| Which force explains why we lunge forward when we are in a car that stops suddenly? | Inertia |
| When a force acts on an object in the SAME DIRECTION of the motion of the object, the object will _____________ | move forward and gain speed. |
| When a force acts on an object in the OPPOSITE DIRECTION of the motion of an object, the object will ____________ | move backward and lose speed/stop. |
| Astronauts weigh less in space than here on Earth because ___________ | the gravitational pull isn't that great. |
| You hit a table with a fly swatter. Describe the reaction force. | The table pushes back on the fly swatter with EQUAL FORCE |
| A semi truck collides with a Honda civic. What is the momentum of the vehicles before and after the crash? | The SAME |
| What happens when a large marble collides with a stationary small marble? | LM hits SM. Both marbles continue moving it the direction LM hit SM. |
| How does a lubricant work to reduce friction? | There is less rubbing since the lubricant fills the microscopic bumps and ridges. |
| Force | Push or pull |
| Inertia | Tendency of an object to resist change in motion |
| STATIC Friction | Opposes motion; keeps an object at rest |
| Relationships between forces, mass and acceleration | 2nd Law |
| SLIDING Friction | Opposes the motion of surface rubbing past each other |
| FLUID Friction | Opposes the motion between a surface and a fluid ( Air resistance: more surface area = more friction ) |
| BALANCED Force | Doesn't change the motion of an object (Net forces = 0) |
| UNBALANCED Force | Does change the motion of an object (Net forces do NOT = 0) |
| Force Pair | The force 2 objects apply to each other (Action: swimmers hand pulls water back Reaction: water pushes swimmer forward) |
| Momentum | Law that states the total momentum of a group of objects stays the same unless an outside force acts on the objects |
Created by:
emma_ambrosia
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