Section 1: Motion, Work and Energy

Question 1

Motion

Answer 1

The movement or change of somethings position

Question 2

Uniform Motion

Answer 2

An object that moves at a constant (The same) rate in the same direction. True (100%) uniform motion is nearly impossible to keep.

Question 3

Average speed

Answer 3

A change in distance during a time interval (a period of time between 2 or more events)

Question 4

Scalars

Answer 4

A quantity that has a size only but no specific direction Ex. Time, mass, distance, and speed

Question 5

Vectors

Answer 5

Quantity that has both size and direction Ex. Displacement, velocity and force

Question 6

Velocity

Answer 6

The speed of something in a specific direction

Question 7

Displacement

Answer 7

An objects change to its position compared to where it started. Displacement is always given a specific direction

Question 8

Slope

Answer 8

A measurement of steepness. In a line on time graph slope is equal to the average speed of the object

Question 9

Acceleration

Answer 9

A change in velocity during a specific time interval

Question 10

Force

Answer 10

A push or a pull

Question 11

Work

Answer 11

• The application of force during a displacement
• The SI unit for work is Joules

Question 12

Balanced Forces

Answer 12

• When forces 1 and 2 are balanced.
• When forces acting on an object are balances the velocity will remain at a constant rate. On a graph would tell a rate of “0”

Question 13

Unbalanced Forces

Answer 13

Unbalanced forces will cause acceleration in the object they are acting upon

Question 14

Energy

Answer 14

The ability to do work

Question 15

3 Conditions In order For Work To Occur

Answer 15

• There must be movement
• There must be force
• The force and distance the object travels must be in the same direction

Question 16

Work output

Answer 16

• The amount work energy the object or system gains as a result of work being done
• it is the work input minus any energy lost as the result of friction