forces test Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

inertia (kg)

A

tendency of an object to resist a change in motion unless an outside force acts on the object
more matter–> more inertia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

mass (kg)

A

amount of matter in an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

matter

A

anything that has mass and takes up space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

weight

A

a measure of gravitational force on an object

changes where you are in the universe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

acceleration

A

rate of at which velocity changes over time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Newton’s 1st Law

A

an object in motion/rest will stay in motion/rest when fnet=0 (unless another force acts upon it)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Newton’s 2nd Law

A

a net force causes acceleration

fnet=ma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

net force

A

amount of forces added

forces going are positive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

gravity

A

the force that attracts a body toward the center of the earth, or toward any other physical body having mass.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

free fall

A

the motion of a body when only the force of gravity is acting on the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

free fall acceleration

A

acceleration in free fall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

air resistance

A

air resisting things that fall

ex. parachuting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

terminal velocity

A

the constant velocity of a falling object when the force of air resistance is equal in magnitude and opposite in direction to the force of gravity (weight and air resistance the same)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

projectile

A

the curved path that an object follows when thrown, motion of object is in two dimensions (vertical and horizontal) under the force of gravity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

parabola

A

two dimensional, symmetrical curve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

horizontal motion

A

motion that is horizontal

17
Q

vertical motion

A

motion that is vertical

18
Q

circular motion

A

motion that is circular and pulls inward

19
Q

weightlessness

A

when there’s less gravity it feels like your weightless

20
Q

centripetal force

A

when your swinging a rope with a mass attached to it in a circle and the force pulls inward

21
Q

Newton’s 3rd law

A

when one object exerts a force on a second object, the second object exerts an equal and opposite force upon the first (every action has an equal but opposite reaction)

22
Q

action-reaction pair

A

2 things that act upon each other