Basics of Motion
What is the definition of displacement?
Displacement is the change in position of an object in a particular direction.
What is the equation for average velocity?
Average velocity (Vavg) is the total displacement divided by the total time taken.
What is Newton's third law of motion?
Newton's third law states that for every action, there is an equal and opposite reaction.
What is a position-time graph?
A position-time graph shows the position of an object at different times, illustrating its motion over time.
Define terminal velocity.
Terminal velocity is the constant velocity reached by an object falling through a fluid when the force of air resistance equals the force of gravity.
Describe uniform motion.
Uniform motion is when an object travels equal distances in equal intervals of time.
State the equation for average speed.
Average speed is the total distance traveled divided by the total time taken.
Explain the concept of friction.
Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact.
Define the term "displacement-time graph."
A displacement-time graph represents how the displacement of an object changes over time.
Describe the motion of an object in uniform acceleration.
In uniform acceleration, the velocity of an object changes at a constant rate over time.
Define velocity.
Velocity is the rate of change of displacement with respect to time. It includes both magnitude and direction.
Define instantaneous velocity.
Instantaneous velocity is the velocity of an object at a specific instant in time.
Differentiate between static and kinetic friction.
Static friction occurs between two surfaces that are not moving relative to each other, while kinetic friction occurs between two surfaces that are sliding past each other.
Explain the concept of projectile motion.
Projectile motion is the motion of an object thrown or projected into the air, subject only to the force of gravity and air resistance (if present).
What is meant by a reference frame?
A reference frame is a coordinate system used to describe the motion of objects relative to a fixed point or another object.
Explain the difference between speed and velocity.
Speed is the rate of change of distance with respect to time, while velocity is the rate of change of displacement with respect to time and includes direction.
What is Newton's second law of motion?
Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).
What is the coefficient of friction?
The coefficient of friction is a dimensionless quantity representing the ratio of the force of friction between two surfaces to the force pressing them together.
What are the key differences between distance and displacement?
Distance is the total length of the path traveled by an object, while displacement is the straight-line distance between the initial and final positions of the object.
Explain the concept of free fall.
Free fall is the motion of an object under the influence of gravity only, with no other forces acting on it.
What is acceleration?
Acceleration is the rate of change of velocity with respect to time.
Define inertia.
Inertia is the tendency of an object to resist changes in its state of motion.
Describe the motion of an object with zero acceleration.
An object with zero acceleration maintains a constant velocity and does not change its speed or direction.
What can you infer from a velocity-time graph?
A velocity-time graph shows how the velocity of an object changes over time, indicating acceleration, deceleration, or constant velocity.
What is the role of mass in Newton's second law of motion?
Mass is the measure of inertia of an object and plays a crucial role in determining the acceleration of an object under the influence of a given force.