Motion Flashcards
What is the study of the relationship between the motion of bodies and the forces acting on them called?
Force and motion
What is the relationship between velocity, acceleration, and distance known as?
Kinematics
How is motion defined?
A continuing change of position or place
What characterizes uniform motion?
Constant speed over a given period of time
Define speed in physics.
How fast an object is moving or how far it travels in a specific time
What does velocity denote?
Both speed and the direction of motion
True or False: Speed and velocity are interchangeable terms in physics.
False
What is a vector in the context of physics?
A line of specific length with an arrow indicating direction
How can two velocity vectors be combined?
Through vector analysis
What happens to an airplane flying in a circular pattern at constant speed?
It is constantly changing velocity
What is the formula to calculate speed?
Distance divided by elapsed time
Acceleration is defined as the rate of change of _______.
Velocity
How is average acceleration calculated?
Change in velocity divided by time
What is the acceleration due to gravity?
32.2 fps/s
What does Newton’s first law of motion describe?
Inertia
What does Newton’s second law state?
The rate of change of momentum is proportional to the applied force
What is the formula for thrust derived from Newton’s second law?
F = MA
Newton’s third law of motion states that for every action there is an _______.
Equal and opposite reaction
What is circular motion?
Motion of an object along a curved path with a constant radius
What is centripetal force?
The force directed towards the center of a circular path
Centripetal force is directly proportional to the _______ of the object in circular motion.
Mass
Centripetal force is inversely proportional to the _______ of the circle.
Radius
Centripetal force is directly proportional to the square of the _______.
Velocity
What is the effect of a 10-pound weight moving in a 3-ft radius circular path at 500 fps?
Experiences 2,588 Gs
Centripetal Force =
Mass (Velocity^2) / Radius
