Kinematics Flashcards
What is kinematics?
The branch of physics that studies the motion of objects without considering the forces that cause the motion.
What is the difference between distance and displacement?
Distance is the total length of the path traveled, while displacement is the change in position from the starting point to the final point.
What is the formula for average speed?
Average speed = total distance / total time
What is the formula for velocity?
Velocity = displacement / time
True or false: Acceleration is a vector quantity.
True
What is the formula for acceleration?
Acceleration = change in velocity / time taken
What is the difference between uniform motion and uniformly accelerated motion?
Uniform motion has constant speed, while uniformly accelerated motion has constant acceleration.
What is the formula for final velocity in uniformly accelerated motion?
Final velocity = initial velocity + (acceleration * time)
What is the equation of motion for an object in uniformly accelerated motion?
s = ut + (1/2)at^2
What is the formula for the time taken for an object to reach a certain velocity in uniformly accelerated motion?
Time taken = (final velocity - initial velocity) / acceleration
What is the formula for the distance traveled by an object in uniformly accelerated motion?
Distance traveled = (initial velocity * time) + (1/2) * acceleration * time^2
What is the slope of a velocity-time graph?
Acceleration
What is the area under a velocity-time graph?
Displacement
What is the slope of a displacement-time graph?
Velocity
What is the area under a displacement-time graph?
Distance traveled
What is the difference between speed and velocity?
Speed is a scalar quantity that only indicates how fast something is moving, while velocity is a vector quantity that includes both speed and direction.
What is the formula for instantaneous speed?
Instantaneous speed = lim (Δs / Δt) as Δt approaches 0
What is the formula for instantaneous velocity?
Instantaneous velocity = lim (Δs / Δt) as Δt approaches 0, with direction
What is the difference between average speed and instantaneous speed?
Average speed is the total distance traveled divided by the total time taken, while instantaneous speed is the speed at a particular instant.
What is the difference between average velocity and instantaneous velocity?
Average velocity is the total displacement divided by the total time taken, while instantaneous velocity is the velocity at a particular instant.
What is the formula for acceleration due to gravity near the surface of the Earth?
Acceleration due to gravity = 9.81 m/s^2
What is free fall?
The motion of an object falling under the influence of gravity without any other forces acting on it.
What is the formula for the time taken for an object to fall freely from a certain height?
Time taken = sqrt(2h / g), where h is the height and g is the acceleration due to gravity
What is terminal velocity?
The constant maximum velocity reached by an object falling through a fluid due to air resistance balancing the force of gravity.
