thomas 2nd law test Flashcards

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

Bossy newtons first law

A

if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

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

Bossy newtons second law

A

the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it. The momentum of a body is equal to the product of its mass and its velocity.

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

Bossy newtons third law

A

when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction.

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

Towing problem

A

Net force: (one force take away the other)

Acceleration: F=MA

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

Rocket problem

A

Thrust, T, from the rocket increases
Weight of the rocket, MG, decreases
F=T-MG

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

Elevator problem Lift moving up and accelerating

A

F=MG
T-MG=MA
1) Lift moving up and accelerating (a>0) T=MG+MA T>MG

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

Pulling problem

A

As on goes up, one goes down
For m: T-mG=mA
For M: Mg-t=MA
T-MG = MG -T (M-m)g = (M+m)a

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

Sliding slope

A

mgsinθ = force slope down
mgsinθ - friction = ma
mgsinθ - friction = resultant force

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

Lift problem Lift moving at combined velocity

A

F=MG
T-MG=MA
2) Lift moving at combined velocity (a=0) T=MG

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

lift problem Lift, M, moving up and decelerating

A

F=MG
T-MG=MA
3) Lift, M, moving up and decelerating (a<0) T=MG+MA T(less than) MG

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

Lift problem Lift accelerating downwards

A

F=MG
T-MG=MA
4) Lift accelerating downwards (a<0) T=MG+MA T

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

Lift problem Lift moving down and decelerating

A

F=MG
T-MG=MA
5) Lift moving down and decelerating (a>0) T=MG+M

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