3.5 Newtons Laws Of Motion Flashcards Preview

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Flashcards in 3.5 Newtons Laws Of Motion Deck (10)
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1
Q

Newtons first

A

A body will remain at rest or continue to move at a constant velocity until an external force acts on it

2
Q

Newtons second

A

Resultant force on an object is proportional to the rate of change of momentum of the object, and the momentum change takes place in the direction of the force

3
Q

Newtons third

A

If object a exerts a force on object b, object b will exert an equal and opposite force on object a

4
Q

What is needed for Newton’s third law?

A

Forces must be of the same type
Must be acting in opposite directions
On different objects

5
Q

Momentum equitation

A

Mass x velocity

6
Q

What is the principle of conservation of momentum?

A

The total momentum before a collision is always equal to the total momentum after the collision, provided that no external forces are involved

7
Q

Define impulse

A

The forces of a force and time time for which it acts

8
Q

What is impulse the same as?

A

Change in momentum

9
Q

what is the area beneath a force time graph?

A

Impulse

10
Q

Define force

A

Rate of change of momentum