Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Physics CGP Paper 2 > Section 1 > Flashcards

Section 1 Flashcards

You may prefer our related Brainscape-certified flashcards:
Physics 101 flashcards AP® Physics flashcards
1
Q

If something has a smaller mass will it accelerate more?

A

Yes.

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

If you push something what force will the object push back at?

A

The same force.

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

Vectors?

A

Have size and direction.

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

Scalars?

A

Have size.

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

What is the resultant force?

A

When there is multiple forces acting on an object it is the overall force acting on the object.

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

Examples of vector quantities?

A

Force, velocity, displacement, acceleration, momentum.

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

Examples of scalar quantities?

A

Mass, temperature, time, length.

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

What is the resultant force of 220N north, 180N south and 90N south?

A

50N south.

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

Force =

A

Mass x acceleration.

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

Momentum =

A

Mass x velocity

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

Momentum before =

A

Momentum after.

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

Moment before =

A

moment 1 + moment 2

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

Moment after =

A

mass x velocity. Add two masses of objects together and they will equal the moment before, so just work out v.

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

What happens when a force acts on an object?

A

It causes it to change in momentum.

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

What does a larger force mean in terms of momentum?

A

A faster change in momentum, so a greater acceleration.

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

Force acting =

A

Change in momentum / time taken for change to happen.

17
Q

How are cars designed for a crash?

A

To slow people down over a longer time.

18
Q

Why do you wanted a longer time for a crash?

A

The longer it takes for a change in momentum, the smaller the force.

19
Q

What do crumple zones do?

A

Increase the time taken for a car to stop.

20
Q

How do seatbelt help?

A

They stretch slightly, increasing the time taken for the wearer to stop. This reduces the force acting on the chest.

21
Q

How do air bags help?

A

They slow you down more gradually.

22
Q

If an object is balanced then:

A

Total anticlockwise moments = total clockwise moments.

23
Q

What happens if the total moments are not equal?

A

There will be a resultant moment.

Physics CGP Paper 2 (15 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions