Linear kinematics
What is physics?
a) the study of mass and how it reacts to diferent conditions.
b) the study of energy and how it is stored, transfered and used.
c) the study of light and sound.
b) the study of energy and how it is stored.
What is angular displacement?
a) the measure of motion in a straight line.
b) The measure of motion in displacement.
c) The measure of motion through the amount an object rotates about an axis.
c) The measure of motion through the amount an object rotates about an axis.
What is dynamics?
a) The study of movement without considering the forces that affect that movement.
b) A section of mechanics that studies the circular movement on an axis.
c) A section of mechanics that studies the motion of objects as a result of the forces that are applied to those objects.
c) A section of mechanics that studies the motion of objects as a result of the forces that are applied to those objects.
What is momentum?
a) a Physical law that keeps objects moving if they are already moving.
b) The resistance of an object to start moving or accelearate.
c) The product of a force and time period over which that forct is applied.
a) a Physical law that keeps objects moving if they are already moving.
Arrows are used to express the direction that an object is moving. The lenght of the arrow conveys the magnitude of the object. What are the arrows called?
a) Direction arrows
b) Scalar arrows
c) Vector arrows
c) Vector arrows
What is Mechanical dynamics?
a) the study of energy and how it is stored, transfered and created.
b) The study of life and how it benefits from movement.
c) The study of the motion of objects and the forces that affect that motion.
c) The study of the motion of objects and the forces that affect that motion.
Match the following terms:
Revolutions Degree Radians
a) They are useful when a fraction of a revolution may be important to know.
b) The unit of measure that relates to the value of PI.
c) Describe how many full circles an object completes.
Revolutions - C
Degrees - A
Radians - B
What are vector diagrams used for?
a) to visualize how an object might react to an applied force.
b) To understand how much an object can accelerate
c) To know what speed an object has.
a) to visualize how an object might react to an applied force.
What is inertia?
a) a Physical law that keeps objects moving if they are already moving.
b) The resistance of an object to start moving or accelearate.
c) The product of a force and time period over which that forct is applied.
b) The resistance of an object to start moving or accelearate.
How do you measure acceleration of a car?
a) change of velocity divided by time interval
b) Distance divided by time
c) Displacement divided by time
a) change of velocity divided by time interval
Distance divided by time = Speed
Displacement divided by time = Velocity
What is Kinematics?
a) The study of how thinkgs move without considereing the forces that are causing that motion.
b) The study of how motion affects objects.
c) The study of enrgy and how it affects motion.
a) The study of how thinkgs move without considereing the forces that are causing that motion.
What are encoders?
a) Devices that measure the revolutions of a motor.
b) Devices that measure the distance traveled of a robot.
c) They measure the angular displacement of a wheel.
c) They measure the angular displacement of a wheel.
How can energy be defined?
a) Measurement of motion
b) The ability to do work
c) heat in a system
b) the ability to do work.
What is impulse?
a) a Physical law that keeps objects moving if they are already moving.
b) The resistance of an object to start moving or accelearate.
c) The product of a force and time period over which that forct is applied.
c) The product of a force and time period over which that forct is applied.
What is Magnitude?
a) greatness of size, strenght, or importance
b) measurement of heat
c) The force of magnets
a) greatness of size, strenght, or importance
What is the difference between linear kinematics and angular kinematics?
Linear kinematics in the physics that is involved with objects traveling in a straingth line. While angular kinematics it the physics of objects revolving about an axis.
What is the difference between speed and velocity?
Velocity describes how fast and object is moving and in which direction.
We know that dynamics is a section of mechanics that studies the motion of objects as a result of the forces that are applied to those objects.
What law of Newton can explain this subject of study?
3rd law of motion: For very action there is an equal and opposite reaction.
How would you describe moment of inertia of an object ( rotational inertia )?
It is the resistance of an object to rotational movement and so will determine how much torque is needed to get a rotating object to spin.
What is potential energy?
Stored energy
How could you explain the difference between distance and displacement ?
Displacement is the exact distance between two points without considereing which paths were taken.
Distance measures how far an object traveled along any path.
What is an example of angular kinematics?
A motor turning a gear. The rotation of a wheel. rotation of a bicycle tire, a merry-go-round, a toy top, a food processor, a laboratory centrifuge, and the orbit of the Earth around the Sun.
What do we call the balance of equal forces?
It is equilibrium
Give an example of angular momentum.
What are the 3 Newton's laws of motion?
In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.