Basic Concepts
What is the definition of kinematics?
Kinematics is the study of motion without considering the forces that cause the motion.
What is the equation for average speed?
The equation for average speed is: average speed = (total distance traveled) / (total time elapsed).
What is the difference between scalar and vector quantities?
Scalar quantities have only magnitude (e.g., mass, temperature), while vector quantities have both magnitude and direction (e.g., displacement, velocity, acceleration).
What is projectile motion?
Projectile motion is the motion of an object that is launched into the air and then moves under the influence of gravity alone.
What is Newton's first law of motion?
Newton's first law of motion, also known as the law of inertia, states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
What are the three types of kinematic equations?
The three types of kinematic equations are those that relate displacement, velocity, acceleration, and time.
What is the difference between uniform and non-uniform motion?
Uniform motion is motion at a constant speed, while non-uniform motion is motion at a changing speed.
What is the equation for finding the components of a vector?
The equation for finding the x and y components of a vector is: x-component = magnitude * cos(angle), y-component = magnitude * sin(angle).
What is the difference between the horizontal and vertical components of projectile motion?
The horizontal component of projectile motion is constant and is not affected by gravity, while the vertical component of projectile motion is
What is Newton's second law of motion?
Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. The formula for this law is F = ma, where F is the net force, m is the mass of the object, and a is the acceleration.
What is the difference between distance and displacement?
Distance is a scalar quantity that refers to the total length traveled by an object, while displacement is a vector quantity that refers to the change in position of an object from its initial position to its final position.
What is the difference between instantaneous speed and average speed?
Instantaneous speed is the speed at a particular moment in time, while average speed is the total distance traveled divided by the total time elapsed.
What is the difference between position and displacement vectors?
Position vectors describe an object's location relative to a fixed reference point, while displacement vectors describe the change in an object's position from its initial position to its final position.
What is the range of a projectile?
The range of a projectile is the horizontal distance it travels before hitting the ground. The formula for range is: range = (velocity^2 * sin(2*angle)) / gravity, where velocity is the initial velocity of the projectile, angle is the angle at which it was launched, and gravity is the acceleration due to gravity.
What is Newton's third law of motion?
Newton's third law of motion states that for every action, there is an equal and opposite reaction. This means that if object A exerts a force on object B, then object B will exert an equal and opposite force on object A.
What is the difference between speed and velocity?
Speed is a scalar quantity that refers to the rate at which an object covers distance, while velocity is a vector quantity that refers to the rate at which an object changes its displacement.
What is the equation for acceleration?
The equation for acceleration is: acceleration = (change in velocity) / (change in time).
What is the difference between velocity and acceleration vectors?
Velocity vectors describe an object's rate of change of position, while acceleration vectors describe an object's rate of change of velocity.
What is the maximum height of a projectile?
The maximum height of a projectile is the highest point it reaches before falling back to the ground. The formula for maximum height is: maximum height = (velocity^2 * sin^2(angle)) / (2 * gravity), where velocity is the initial velocity of the projectile, angle is the angle at which it was launched, and gravity is the acceleration due to gravity.
What is the difference between mass and weight?
Mass is a measure of the amount of matter in an object, while weight is a measure of the force exerted on an object due to gravity. Mass is a scalar quantity, while weight is a vector quantity.
What is the equation for average velocity?
The equation for average velocity is: average velocity = (change in displacement) / (change in time).
What is the relationship between acceleration and velocity?
Acceleration is the rate at which an object's velocity changes. If an object's velocity is changing at a constant rate, then its acceleration is constant.
What is the equation for finding the resultant of two vectors?
The equation for finding the resultant of two vectors is: resultant = sqrt((x1+x2)^2 + (y1+y2)^2), where x1 and y1 are the x and y components of the first vector, and x2 and y2 are the x and y components of the second vector.
What is the equation for the time of flight of a projectile?
The equation for the time of flight of a projectile is: time of flight = (2 * velocity * sin(angle)) / gravity, where velocity is the initial velocity of the projectile, angle is the angle at which it was launched, and gravity is the acceleration due to gravity.
What is the equation for calculating the force of friction?
The force of friction is the force that opposes motion between two surfaces in contact. The equation for calculating the force of friction is Ff = µFn, where Ff is the force of friction, µ is the coefficient of friction, and Fn is the normal force between the two surfaces in contact.