PHY105P Lesson 3

Question 1

branch of physics that deals with the effects of forces on an object. It combines kinematics and dynamics

Answer 1

mechanics

Question 2

deals with the concepts that are needed to describe motion

Answer 2

kinematics

Question 3

deals with the effect that forces have on motion

Answer 3

dynamics

Question 4

motion along a straight line

Answer 4

one-dimensional (1D) motion

Question 5

Simplest case of a motion to study
Considering objects to travel along a flat and narrow straight line
The object is considered as a point

Answer 5

one-dimensional (1D) motion

Question 6

a physical entity to which the motion and position of objects are referred

Answer 6

reference frame

Question 7

the total path taken/traveled by an object

Answer 7

distance

Question 8

distance (scalar vs vector)

Answer 8

scalar quantity

Question 9

measure of an object change in position relative to a reference point from the initial position to the final position

Answer 9

displacement

Question 10

displacement (scalar vs vector)

Answer 10

vector quantity

Question 11

the distance over time, how fast or slow an object moves regardless of the directions

Answer 11

Speed

Question 12

Speed (scalar vs vector)

Answer 12

scalar quantity

Question 13

displacement over time, how fast or slow an object moves with consideration of the initial and final position and the direction the object travels

Answer 13

velocity

Question 14

Velocity (scalar vs vector)

Answer 14

Vector quantity

Question 15

the distance traveled divided by the time required to cover the distance

Answer 15

average speed

Question 16

displacement divided by the elapsed time

Answer 16

average velocity

Question 17

indicates how fast an object moves and the direction of motion at each instant of time

Answer 17

instantaneous velocity

Question 18

a change in velocity is combined with the time during which the change occurs

Answer 18

acceleration

Question 19

constant vertical acceleration downwards

Answer 19

free fall

Question 20

acceleration of a freely falling body

Answer 20

acceleration due to gravity

Question 21

motion of an object or projectile traveling into the air

Answer 21

projectile motion

Question 22

the parabolic path that the object thrown will follow

Answer 22

trajectory