A
Movement along a circular path is called what?
circular motion
According to the ancient Greeks, why does smoke rise from a camfire?
True or False An amusement park ride moving in circular motion with a constant speed is still accelerating.
True
What is symbol that represents displacement?
'delta' x
True or False Displacement is always greater than or equal to distance.
False Distance is always greater than or equal to displacement
True or False When studying motion, we often identify a particular system rather than study all the possible motion.
True
The laws of motion and law of universal gravitation developed by ________ form the basis for classical mechanics.
Isaac Newton
Why do we still use Newtonian mechanics for studying motion today?
It is workable for most objects without being overly complex.
What are two factors that affect momentum.
mass and velocity
distance, displacement, speed, velocity, force, acceleration, time,
displacement, velocity, force, acceleration
Any quantity that is described by magnitude or size alone is a scalar or vector?
scalar
The study of motion is called what?
mechanics
A vector consists of ________ and _________.
direction and magnitude/ size
What is the displacement for the motion, from A to B to C to D, shown in the image on the board.
look at board
What is the distance for the motion, from A to B to C to D, shown in the image on the board.
look at board
An airplane is flying west at 230 kph. The wind is blowing east at 40 kph. Add the two vectors to determine the final velocity.
190 west
Branch of motion dealing with how things move is called what?
kinematics
The path of an object in projectile motion is its what?
trajectory
see board
What is a coordinate system that we can use to describe an object's motion?
frame of reference
The two-dimensional movement of a flying object whose path is influenced only by external forces is called what?
Projectile motion
A vector directed toward the center of a circle is called what?
centripetal acceleration
The motion of an object that falls due to gravity alone with no other forces acting on it is called what?
free fall
Even when you are sitting as motionless as possible, according to which frame of reference are you still moving?
moon, stars, universe, sun
Why do objects in projectile motion not trace parabola in real life?
air resistance or drag