Chapter 2:motion Flashcards Preview

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Flashcards in Chapter 2:motion Deck (18)
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1
Q

Displacement

A

Change in location of an object.

2
Q

Kinematics

A

How things move/ motion of an object or system of object

Includes position, velocity, and acceleration

3
Q

Speed

A

Rate change of an object

4
Q

Instantaneous speed

A

Speed at 1 given moment in time

5
Q

Constant speed

A

Speed which neither decreases or increases

6
Q

Average speed

A

Calculated by dividing distance by time

7
Q

How to find time

A

Time= distance/velocity

8
Q

Acceleration

A

How fast something speeds up or slows down

Measured meters seconds per seconds

9
Q

Formula for acceleration

A

A=(Vf-Vi)/t
Vf= ends up at
Vi= speed it starts at

10
Q

Force

3 forces

A

Any push or pull exerted on an object.
Gravity
Supporting force
Air pressure

11
Q

Balance force

A

Equal in size and opposite in direction

Ex: tug-o-war

12
Q

Unbalanced forces

A

Not equal in size

Ex: kicking a ball

13
Q

Newton’s first law

Other name for it

A

Object will maintain a constant velocity unless acted on by a net force.
Law of inertia

14
Q

Inertia

A

Tendency of an object to resist any change in. Motion

15
Q

Gravity

A

Force of mutual attraction which every object in the universe exerts on every other object

16
Q

Weight

A

Measure of the gravitational pull on an object

SI unit Newton

17
Q

Friction

Variables that help determine amount of friction

A

Force which opposes motion between two surfaces which are in direct contact
Force pushing the surfaces together
Texture

18
Q

Motion

A

Change in position of an object

Ex:Earths rotation