Physics Midterm Terms

Studied by 11 people
5.0(1)
get a hint
hint

Displacement

1 / 29

Tags and Description

Terms and Definitions from the "Know the Definition of..." Section of the Midterm Study Guide

30 Terms

1

Displacement

The change in an object’s position

New cards
2

Vector Quantity

A physical measurement that contains directional information

New cards
3

Scalar Quantity

A physical measurement that does NOT contain directional information

New cards
4

Velocity

The time rate of change of an object’s position (Δx/Δt)

New cards
5

Speed

The time rate of change of the distance traveled by an object (Δd/Δt)

New cards
6

Acceleration

The time rate of change of an object’s velocity (Δv/Δt)

New cards
7

Acceleration due to gravity on earth (metric)

9.8 m/sec^2

New cards
8

Acceleration due to gravity on earth (Imperial)

32 ft/sec^2

New cards
9

Free Fall

The motion of an object when it is falling solely under the influence of gravity

New cards
10

Parabolic Motion

Motion that occurs when an object moves in two dimensions but has zero acceleration in one of those dimensions and a constant, non zero acceleration in the other

New cards
11

Friction

A force that opposes motion, resulting from the contact of two surfaces

New cards
12

Newton’s First Law (The Law of Inertia)

An object in motion (or at rest) will tend to stay in motion (or at rest) until it is acted upon by an outside force

New cards
13

Newton’s Second Law

When an object is acted on by one or more outside forces, the vector sum of those forces is equal to the mass of the object times the resulting acceleration vector (ΣF=ma)

New cards
14

Prefixes for mass

Slugs, grams (mg, kg)

New cards
15

Prefixes for weight

Newtons, dynes, pounds

New cards
16

Normal Force

A force that results from the contact of two bodies and is perpendicular to the surface of contact

New cards
17

Kinetic Friction

Friction that opposes motion once the motion has already started

New cards
18

Static Friction

Friction that opposes the initiation of motion

New cards
19

Newton’s Third Law

For every action, there is an equal and opposite reaction

New cards
20

Translational equilibrium

An object is said to be in translational equilibrium when the sum of the forces acting on it is equal to zero

New cards
21

Two types of translational equilibrium

Static and Dynamic

New cards
22

Static Equilibrium

When an object is at rest

New cards
23

Dynamic Equilibrium

When an object moves with a constant velocity

New cards
24

Tension

the force from a tight string, rope, or chain. This force is directed away from the object to which the string, rope, or chain is anchored

New cards
25

Translational Motion

Motion from one point to another which does not involve repeatedly passing the same point in space

New cards
26

Rotational Motion

Motion around a central axis such that an object could repeatedly pass the same point in space relative to that axis

New cards
27

Axis of rotation

The point in space at the center of rotational motion

New cards
28

Lever arm

the length of an imaginary line drawn from the axis of rotation to the point at which the force is being applied

New cards
29

Torque

The tendency of a force to cause rotational acceleration. The magnitude of the torque is equal to the length of the lever arm times the component of the force that is applied perpendicular to it

New cards
30

Rotational Equilibrium

The state in which the sum of the torques acting on an object is zero

New cards

Explore top notes

Note
Studied by 32008 people
Updated ... ago
4.6 Stars(63)
Note
Studied by 68 people
Updated ... ago
5.0 Stars(2)
Note
Studied by 25 people
Updated ... ago
5.0 Stars(1)
Note
Studied by 37 people
Updated ... ago
4.0 Stars(2)
Note
Studied by 190 people
Updated ... ago
5.0 Stars(1)
Note
Studied by 9 people
Updated ... ago
5.0 Stars(1)
Note
Studied by 7 people
Updated ... ago
5.0 Stars(1)
Note
Studied by 85 people
Updated ... ago
5.0 Stars(4)

Explore top flashcards

Flashcard26 terms
Studied by 1 person
Updated ... ago
5.0 Stars(1)
Flashcard30 terms
Studied by 9 people
Updated ... ago
5.0 Stars(1)
Flashcard78 terms
Studied by 58 people
Updated ... ago
5.0 Stars(1)
Flashcard44 terms
Studied by 3 people
Updated ... ago
5.0 Stars(1)
Flashcard24 terms
Studied by 2 people
Updated ... ago
5.0 Stars(1)
Flashcard67 terms
Studied by 2 people
Updated ... ago
5.0 Stars(1)
Flashcard37 terms
Studied by 10 people
Updated ... ago
5.0 Stars(1)
Flashcard100 terms
Studied by 266 people
Updated ... ago
5.0 Stars(4)