Vismaya Yogesh - Physics Quiz #3 Study Guide (22-23)

**Physics Quiz #3: Study Guide**

| **Term** | **Definition, description, and/or examples** |
|----|----|
| **Mass** | **The amount of matter in an object; will not change based on gravity** |
| **Weight** | **A measure of force of gravity on an object; will change based on gravity** |
| **Frictional force** | **The force that resists movement across a surface** |
| **Dynamic / kinetic friction** | **Force of Friction between surfaces in motion; result of surfaces moving over one another.** |
| **Static friction** | **Force of friction between surfaces NOT in motion; result of surfaces adhering to each other; strongest form of friction** |
| **Sliding friction** | **Form of Kinetic/dynamic friction** |
| **Rolling friction** | **Form of Kinetic/dynamic friction; weakest type of friction** |
| **Inertia** | **The tendancy to remain unchanged (Newton’s 1st Law)** |
| **Acceleration** | **The increase (+) or decrease (-) in an object’s motion** |
| **Velocity** | **The direction and a rate at which an object is moving** |

| **Observe the image below; this illustration shows the girl pushing on a heavy boulder, but the boulder is not moving. Explain why the boulder does not move. While there may be a variety of reasons for this, explain how friction is affecting the motion of the boulder.** |
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| \*\*\*\* | **Why is the person not able to move the objects? Include ideas about balanced/unbalanced forces in addition to static friction.** |
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| **The person is unable to exert a force strong enough to overcome static friction, thus, the object remains stationary (Balanced forces)** | |

| \*\*\*\* | **Why is the person able to move the object?** |
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| **The person is able to exert a force strong enough to overcome static friction, thus, the object moves (Unbalanced forces).** | |

| **DIRECTIONS:** Calculate the mass and force (weight) for each of the following problems. If necessary, use the information below. |
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| How do you calculate an object’s mass (g) to Newtons (N)?Divide the mass by 100How do you calculate an object’s force (N) to mass (g)?Multiply the force by 100 |

| **What are Newton’s Laws and how do they exhibit principles from physics?** |
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| **Law** |
| **Definition (simplify to terms you understand)** |
| **Application / connection to what we have done in physics (labs, activities, simulations, etc.)** |

| **DIRECTIONS:** Calculate either the force, mass, or acceleration for each of the following problems. If necessary, use the information below. |
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