CIRCULAR MOTION

Question 1

➔ Refers to the motion of a body turning about an axis, where each particle of the body moves a circular path.

Answer 1

Rotation

Question 2

Rotation is aka

Answer 2

uniform circular motion

Question 3

E.g. roller coasters, movement of celestial bodies in accordance with the sun, a car rotating around a rotonda

Answer 3

uniform circular motion / rotation

Question 4

When an object is moving in ______ the object that is turning is able to complete a revolution, this revolution is actually the circumference of the circle that is created.

Answer 4

a uniform circular motion,

Question 5

To measure a circle, you must consider: (2)

Answer 5

★ The circumference of the circle
★ The radius of the circle

Question 6

These quantities are expressed in the context of the rotational motion

Answer 6

TRANSLATIONAL AND ROTATIONAL MOTION

Question 6

➔ The ratio of the distance traveled along the circumference to the circle’s radius.

Answer 6

ANGULAR DISPLACEMENT

Question 7

Physicists use _______ to describe circular motion

Answer 7

angular quantities

Question 8

The direction of ______ is always changing, but its magnitude may or may not be constant

Answer 8

tangential velocity

Question 9

_________ are used to represent the angular quantities

Answer 9

Greek letters

Question 10

➔ The velocity v of a body moving in a circular path with radius of curvature r at any instant is directed tangentially.

Answer 10

TANGENTIAL VELOCITY

Question 11

➔ A straight line that passes through a point on the sides of the circle or on the circle

Answer 11

Tangent

Question 12

The point where the tangent line and the circle meet is called the _____

Answer 12

point of tangency.

Question 13

➔ Responsible for the changes in the linear speed of a given body

Answer 13

TANGENTIAL ACCELERATION

Question 14

➔ Accounts for changes in the direction of the velocity

This accounts for the changes in the velocity towards the center of the circle

Answer 14

RADIAL/CENTRIPETAL ACCELERATION

Question 14

➔ The object is attracted to the center

Answer 14

centripetal;

Question 15

➔ Acceleration with respect to the tangent.

Answer 15

TANGENTIAL ACCELERATION

Question 16

➔ Is the force applied away from the center of a circular motion

Answer 16

Centrifugal Force

Question 17

➔ The force applied toward the center of a circular motion

Answer 17

Centripetal force

Question 18

➔ Land speed is always relative to the surface of the earth.
➔ Whenever we examine an object’s velocity, it is good to remember that it’s all relative

Answer 18

relative motion

Question 18

➔ Physics is concerned with the motion of objects and the quantitative analysis of that motion

➔ Everything is in constant motion.

Answer 18

RELATIVE MOTION

Question 19

true or false

The earth is an inertial reference frame

Answer 19

true

Question 20

➔ The object that we pretend is still as we assess the motion of other objects relative to this________

Answer 20

Inertial Reference Frame

Question 21

Our planet is a good inertial reference frame, one that is used frequently throughout the study of physics.

t or f

Answer 21

true

Question 22

was the first to describe relative motion

Answer 22

Galileo Galilei