Chapter 2 & 3 Study Guide Physics
Name:______Date:______Pd:____
Chapter 2 & 3 Study GuidePhysics
Chapter 2: Representing Motion
Vocabulary Review
Write the term that correctly completes the statement. Use each term once.
average speedinstantaneous positionresultantposition-time graph
average velocitydistancedisplacementvector
magnitudeinstantaneous velocitypositiontime intervalscalar
- ______The speed and direction of an object at a particular instant is the _____.
- ______Another term given for the size of an object is the _____.
- ______The _____ is the location of an object relative to an origin.
- ______The formula tf – ti represents _____.
- ______A _____ is a quantity with both magnitude an direction.
- ______Ratio of the change in position to the time interval during which the change occurred is the _____.
- ______A graph with time data on the horizontal axis and position data on the vertical axis is a _____.
- ______A vector that represents the sum of two or more vectors is a _____.
- ______A scalar quantity that is the length, or size, of the displacement vector is _____.
- ______The location of an object at a particular instant is _____.
- ______The vector quantity, df – di, that defines the distance and direction between two positions is _____.
- ______The absolute value of the slope on a position-time graph is _____.
- ______A quantity that has only magnitude is _____.
Answer the questions in full sentences.
- What are the two components used to define motion?______
______
______
- Give three examples of straight-line motion. ______
______
______
- A position-time graph plots the course of two runners in a race. Their lines cross on the graph.
- What does this tell you about the runners?______
______
- Draw a graph as an example.
- A student walks 4 blocks north then stops for a rest. She then walks 9 more blocks north and rests, then finally another 6 blocks north. What is her displacement in blocks (magnitude and direction)?
Chapter 3: Accelerated Motion
Vocabulary Review
Write the term that correctly completes the statement. Use each term once.
accelerationaverage accelerationinstantaneous acceleration
free fallacceleration due to gravityvelocity-time graph
- ______A _____ shows how velocity is related to time.
- ______The change in velocity of an object at an instant of time is its ____.
- ______The rate at which an object’s velocity changes is its _____.
- ______The motion of falling objects when air resistance is negligible is called _____.
- ______The _____ of an object is the change in velocity during some measurable time interval divided by that time interval.
- ______The acceleration of an object in free fall that results from the influence of Earth’s gravity is _____.
Graphical Analysis
- On a position-time graph, what variable is on the y-axis?
- How do you find the velocity using a position-time graph?
- On a velocity-time graph, what variable is on the x-axis?
- How do you find the acceleration on a velocity-time graph?
- How do you find the displacement on a velocity-time graph?
- Can you find position using a velocity-time graph?
Answer the following questions about the velocity vs. time graph.
- Find the displacement from 0.0 to 4.0 s.
- Find the displacement from 4.0 to 6.0 s.
- Find the displacement from 0 to 6.0 s.
- What is the instantaneous acceleration at 8.0 s?
- What is the instantaneous velocity at 7.0 s?
- What is the average acceleration between 2.0 and 4.0 s?
- What is the average velocity between 4.0 and 6.0 s?
Kinematics Problems
Use your three kinematics equations to solve the problems. Show your work. Include equation, units, correct sig figs, and a boxed answer.
- A ball rolls past a mark on an incline at 0.40 m/s. In 3.0 s it is traveling at 1.0 m/s. What is its acceleration?
- A race car accelerates at 4.5 m/s2 from rest. What is the car’s velocity after it has traveled 35.0 m?
- A giraffe, who stands 6.00 m tall, bites a branch off a tree to chew on the leaves, and he lets the branch fall to the ground. How long does it take the branch to hit the ground? You may neglect air resistance.
- An airplane traveling at 75 m/s accelerates at 1.83 m/s2 for 12 seconds. How far does it travel?
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