Chapter 5: Momentum Flashcards Preview

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Flashcards in Chapter 5: Momentum Deck (24)
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1

A larger mass or speed results in?

A larger momentum

2

A smaller mass or speed results in?

A smaller momentum

3

When does momentum change?

When mass,velocity, or both change.

4

What happens if an objects velocity changes?

It accelerates

5

What does force produce?

Acceleration

6

Exerting a force over a short period of time results in?

A small change in momentum

7

Exerting a force over a long period of time results in?

A greater change in momentum

8

When changing momentum what two things are important?

Force and time

9

A greater impulse results in what kind of change in momentum?

A greater change

10

A smaller impulse resulted in what kind of change in momentum?

A smaller change

11

How do you increase momentum?

Increase force,time, or both

12

How does your momentum decrease when you hit a hard or soft object?

The same way

13

The same change in momentum equals what kind of change in impulse?

The same change in impulse.

14

To reduce force you do what?

Extend the time of contact.

15

For a short amount of contact time what are the forces like?

Large

16

For a long contact time forces are what?

Small

17

When is an impulse greater?

When an object bounces.

18

What has to occur for momentum to change?

An outside force

19

What happens when internal force act on a system?

No change in momentum occurs.

20

When momentum act in the same direction you what?

Add them

21

When momenta act in opposite directions you what?

Subtract

22

If no momentum is gained or lost it is?

Conserved

23

Conservation occurs in what types of collisions?

Elastic and inelastic

24

When objects are at rest what kind of momentum do they have?

None