Questions and Answers
What is the formula for Kinematics #1?
a = (vf - vi) / t
What is the formula for Kinematics when acceleration is constant or zero?
v = (vi + vf) / 2
What does Fg = mg represent?
Weight or gravitational force.
What is the formula for net force in dynamics?
Signup and view all the answers
What is the formula for distance in two-dimensional motion?
Signup and view all the answers
What is the formula to calculate time in two-dimensional motion?
Signup and view all the answers
What is the formula for the magnitude of initial velocity with vertical component?
Signup and view all the answers
In free fall, mass is needed to determine the motion.
Signup and view all the answers
What does the relationship between the acceleration of an object falling freely indicate?
Signup and view all the answers
What is the acceleration due to gravity when an object is dropped downward?
Signup and view all the answers
What happens to an object thrown upwards?
Signup and view all the answers
Nonzero acceleration has a curve going right.
Signup and view all the answers
What is meant by constant nonzero acceleration?
Signup and view all the answers
What combination of changes increases the time of flight for a launched tennis ball?
Signup and view all the answers
What launch angle results in the greatest horizontal distance for a golf ball returning to ground?
Signup and view all the answers
What does g = Gm/r² represent?
Signup and view all the answers
If balls are thrown from the same height, they will reach the ground at the same time.
Signup and view all the answers
How to find the distance when a ball is thrown horizontally?
Signup and view all the answers
What is the formula for the horizontal component of initial velocity?
Signup and view all the answers
What occurs when a ball is thrown at an angle above the horizontal at its highest point?
Signup and view all the answers
What does the slope on the position-time graph represent?
Signup and view all the answers
What is the formula for slope?
Signup and view all the answers
Study Notes
Kinematics
- The formula for acceleration is represented as a = (vf - vi) / t, where vf is final velocity, vi is initial velocity, and t is time.
- For constant acceleration or no acceleration, average velocity can be calculated as v = (vi + vf) / 2.
Dynamics
- The force of gravity acting on an object is expressed as Fg = mg, where m is mass and g is acceleration due to gravity (approximately 9.81 m/s²).
- The net force acting on an object can be calculated using Fnet = ma, where m is mass and a is acceleration.
Two-Dimensional Motion
- The distance in the horizontal motion can be calculated with d = (vx)(t), where vx is horizontal velocity and t is time.
- Time of flight in a projectile motion can be determined by the formula t = (vi * sinθ) / g, where vi is initial velocity, θ is the launch angle, and g is acceleration due to gravity.
Vertical Motion Components
- The vertical component of the initial velocity is found using Vy = (vi)(sinθ).
- In free fall, the mass of the object does not influence its acceleration.
Free Fall Characteristics
- The relationship between acceleration and falling objects indicates that when there is no velocity, there is no acceleration.
- Objects dropped experience a downward acceleration of +9.81 m/s².
Motion Dynamics
- For objects thrown upwards, the trajectory will eventually lead back down due to gravity.
- Nonzero acceleration results in a curve in the motion path.
Acceleration Types
- Constant nonzero acceleration represents uniform acceleration, indicating a steady increase or decrease of velocity over time.
Projectile Motion Analysis
- Increasing both the launch angle and the initial speed of a projectile will result in greater time of flight.
- A launch angle of 45 degrees maximizes the horizontal distance traveled by a projectile.
Additional Factors in Motion
- The acceleration magnitude due to gravity is given by g = Gm/r², relating gravitational force to mass and distance from the center of the Earth.
- If two balls are thrown from the same height, they will reach the ground simultaneously, assuming air resistance is negligible.
Position and Velocity
- A ball thrown horizontally maintains a horizontal speed while being influenced by gravity vertically, where vi for vertical motion is zero.
- The horizontal velocity can be calculated using Vx = Vi * cosθ, where θ is the launch angle.
Projectile Peak Characteristics
- At the peak of a projectile’s trajectory, its vertical component of velocity equals zero, while horizontal components maintain their velocities.
Graph Interpretation
- The slope of a position-time graph represents the object's velocity, indicating speed and direction of motion.
- The slope is calculated by the change in y (position) divided by the change in x (time).
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of essential physics formulas that are not included in the reference table. This set of flashcards covers various topics such as kinematics, dynamics, and two-dimensional motion. Perfect for physics students looking to strengthen their understanding of key concepts.
