<p>Physics Study Guide 1st semester final exam. </p><p>Unit 1. </p><p>1. I will be able to use and convert between the base units and prefixes in SI units. a. Convert 500 miles/hour to meters/second 2. I will be able to use scientific notation correctly. a. Write 250,790,300 in scientific notation with the correct number of sig figs 3. I will know the difference between accuracy and precision. a. Dart board examples 4. I will apply the rules for significant figures correctly to calculated values. a. How many sig figs in the following a.i. 2.5390 a.ii. 2000 a.iii. 13.500 a.iv. 0.0035 a.v. 25.7 + 13.536 a.vi. 47 * 12,395</p><p>Unit 2. </p><p>1. Describe motion in terms of frame of reference, displacement, time, and velocity.</p><p> a. Velocity is change in position/change in time</p><p> b. Acceleration is change in velocity/change in time</p><p>2. Calculate the displacement of an object traveling at a known velocity for a specific time interval. </p><p> a. Displacement is equal to velocity times change in time. </p><p>3. Interpret graphs of position vs. time. </p><p> a. Be able to look at a graph and tell when there is constant velocity (+,-) and when there is acceleration (+,-) 4. Describe motion in terms of changing velocity.</p><p> a. Again positive changes in velocity verse negative changes in velocity.</p><p>5. Compare graphical representations of accelerated and non-accelerated motions. </p><p>6. Calculate displacement from the area under a velocity vs. time graph</p><p> a. Area under the curve is displacement on a velocity vs. time graph</p><p>7. Apply kinematic equations to calculate distance, time, or velocity under conditions of constant acceleration. </p><p>Be able to do the math</p><p>∆x= xf - xi slope=rise/run vf = vi + at</p><p>2 vavg = ∆x/∆t aavg=∆v/∆t ∆x = ½ at + vit</p><p>2 2 average speed= vavg= ½(vi+vf) vf = vi 2a∆x distance/time ∆x= ½(vi + vf) t</p><p>8.</p><p>9. Unit 3. </p><p>1. Distinguish between a scalar quantity and a vector quantity.</p><p> a. Scalars have only magnitude </p><p> b. Vectors have magnitude and direction</p><p>2. Add and subtract vectors graphically</p><p> a. Vector a + vector b= horizontal parts of both + vertical parts of both</p><p>3. Apply the Pythagorean theorem to calculate the magnitude and directions of a resultant vector</p><p> a. A2 + B2 = C2</p><p> b. Theta= Tan-1 ( B/A)</p><p>4. Resolve a vector into its components using sine and cosine functions a. Horizontal components of vectors with use the cosine function</p><p> b. Vertical components of vectors will use sine function</p><p>5. Recognize examples of projectile motion</p><p>2 2 a. constant ∆x=1/2at + vit + x0 this is the same format as ax +bx + c</p><p>6. Describe the path of a projectile as a parabola</p><p>7. Apply kinematic equations to solve problems involving projectile motion</p><p> a. What is the position of a projectile at a certain time?</p><p> b. How far from the base of this cliff with the projectile land?</p><p> c. Will this projectile land on top of this cliff?</p><p>10.</p><p>11. Unit 4. </p><p>1. Describe how an applied force affects the motion of an object</p><p> a. A net force will cause an acceleration</p><p> b. No net force will cause no change in velocity</p><p>2. Interpret and construct free-body diagrams</p><p> a. Start from center of mass</p><p> b. Draw arrows (vectors) for each force (appropriate direction and magnitude)</p><p>3. Explain the relationship between the motion of an object and the net external force applied to the object</p><p> a. Larger the net applied force the larger the acceleration of the object</p><p>4. Determine the net external force acting on an object</p><p> a. Given a force diagram be able to add the vectors to identify the net external force</p><p>5. Describe an object’s acceleration in terms of its mass and the net force applied to it</p><p> a. F=ma 6. Predict the direction and magnitude of the acceleration caused by a known net force</p><p> a. F=ma</p><p>12.</p><p>13.</p>