Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Physics > Chapter 1 > Flashcards

Chapter 1 Flashcards

Revision (46 cards)

Start Studying
1
Q

Mass (4 points)

A

The quantity of matter in any object.
Measured in Kg.
Scalar quantity.
Measured using physical balance (weighing scale.)

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

Weight (4 points)

A

The measure of the mass in an object depending on the gravity.
Measured using spring balance. (force meter)
Measured in N.
Vector quantity.

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

What is KGF
Also tell its value compared to gravity.

A

The force acting on 1 kg of an object due to gravity.
1 Kgf= 9.8 N

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

Weight mass relation and equation.

A

Weight is directly proportional to mass.

W=mg

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

What happens when an object is thrown upwards.
Explain through proportions and equations.

A

The object comes back down. Both the object and the earth attract each other. The one with the heavier mass does not seem to move.
F is directly proportional to m1 m2
F is inversely proportional to d^2.
G is the constant.
The equation it makes is
f= g (m1 m2)/ d^2

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

Types of forces with similarities and differences.

A

Contact and non- contact
3 types of non-contact forces are: Magnetic, gravitational, electromagnetic.

Magnetic and electromagnetic forces are both attractive and repulsive while gravitational is only attractive.
All 3 act at a distance and have a limit.

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

Comparison of objects with smaller and larger masses on gravity and gravitational force.

A

Both object will have the same acceleration due to gravity but the gravitational force required to pull the larger mass will be more to pull it at the same speed.

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

Definition of acceleration and formula.

A

The rate of change of speed.
(v-u)/t

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

Scalar (define with 6 examples)

A

Only magnitude
distance, speed, time, mass, energy and
temperature

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

Vectors (define with 7 examples)

A

Magnitude and direction
force, weight, velocity, acceleration,
momentum, electric field strength and
gravitational field strength

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

Compare distance and displacement.

A

Distance: The overall length of the path taken always +ve, Equal to or grater than displacement, scalar, affects speed.

Displacement: The shortest path taken. can be -ve, 0 or +ve, Vector, Smaller than or equal to distance, affects velocity.

Both are measured in m

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

Turning effects of forces.(compare with door handles)

A

Force depends of Distance and magnitude. This is why door handles are pivoted at the edge rather than closer to the pivot.

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

Turning effects of forces.

A

TORQUE
At equilibrium, the clockwise moment = anticlockwise moment.
w1d1=w2d2
https://docbrown.info/ephysics/forces5-3.htm

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

Couple

A

Forces acting in same direction causing object to rotate.
https://www.schoolphysics.co.uk/age16-19/Mechanics/Statics/text/Couples_/index.html

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

Low of momentum

A

The initial momentum(p.i)=final momentum(p.f)
m1v1=m2v2
p=m△v at lower speeds
p=△mv at extreme speeds

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

Impulse

A

Force acted for a very short period of time
formulae- △mv or △p or ft.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

First law of motion

A

Law of inertia
An object at rest will remain at rest until an external force is applied on it.(Qualitative law)
Inertia is the ability to resist change in state and it due to the mass.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Inertia

A

The ability (depending on the mass) to resist the change in state of an object.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Second law of motion

Study These Flashcards
A

The rate of change of momentum is directly proportional to force applied and are in the same direction.
F=ma or f=m [(v-u)/t]
Force and acceleration are in the same direction

20
Q

Energy

Study These Flashcards
A

Ability to do work
It can neither be created nor destroyed, can only be converted form one form to another or dissipated into the surroundings.
Original energy= final energy.

20
Q

Third law of motion

Study These Flashcards
A

every action has equal and opposite reaction.
Both action and reaction are on different bodies.

21
Q

Types of energy

Study These Flashcards
A

kinetic,
gravitational potential, chemical, elastic (strain),
nuclear, electrostatic and internal (thermal)

22
Q

The 2 main kinds of energy

Study These Flashcards
A

Kinetic and potential energy.
E(k)=0.5mv^2
E(p)= mgh

23
Q

Work

Study These Flashcards
A

Work done in physics is when force is applied to make an object move displace an object)
W= f*d(displacement)
Work=energy

24
Work in directions
https://www.ck12.org/flexi/precalculus/graph-inverse-trigonometric-functions/what-trig-functions-are-negative-in-which-quadrants/ Add sugar to coffee Work= cosθ fd Work can be +ve, -ve or 0.
25
N, dyne and erg
1N= 10^5 dyne 1dyne cm=1erg 1J= 1N*100cm 1J= 10^5 dyne*100cm 1J= 10^7dyne cm = 10^7 erg 1J= 10^7 erg
26
Centripetal force.
Force acting at the center of an object moving in a circular path. It acts in all directions and the direction changes at every point. This is uniformly accelerated as the velocity changes (due to direction) but speed doesn't change. directly proportional to speed and mass. Inversely proportional to radius(distance)
27
original energy=final energy equation
mgh=0.5mv^2 gh=0.5v^2 2gh=v^2
28
pendulum
at the lowest point means center most kinetic energy at the top more potential energy https://www.google.com/url?sa=i&url=https%3A%2F%2Fpressbooks.uiowa.edu%2Fmethodsii%2Fchapter%2F1172%2F&psig=AOvVaw3AmK4PC6p-K9YmV7Ivlz_B&ust=1747376385281000&source=images&cd=vfe&opi=89978449&ved=0CBEQjRxqFwoTCIiFt7fqpI0DFQAAAAAdAAAAABAE
29
Pressure
Thrust per unit area pressure ∝ temp pressure∝ (1/ volume) temp ∝ volume pressure∝ force pressure∝ surface area pressure= force/ area Unit-pascal [Pa]
30
Liquid pressure
As you go deeper in a liquid, the pressure increases as the mass of the liquid above increases. The pressure at a point is same in all directions. Not dependent on area. Pressure= l*d*g
31
Gas pressure
p1v1=p2v2 v1/t1=v2/t2 p1v1/t1=v2p2/t2
32
Vernier calipers.
Can measure 9/10th of a mm. Least count= 1main scale division-1 vernier scale division. 1mm-0.9mm=0.1mm 0.01cm-least count
33
How to fix 0 error
+ve 0 error Find a point which collides on main and vernier scale. multiply that by the least count. subtract it whenever you get a reading. -ve 0 error find the point that collides Subtract by the number of divisions on the vernier scale. Multiply by the least count. Final reading= actual reading- 0 error reading.
34
Graphs
Slope of distance-time graph= speed area under acc.-time graph= speed Slope of displacement time graph= velocity. area under speed time graph=Distance
35
Terminal velocity
While getting of a plane, you start to fall. This is due to the weight of your body as your body contains mass and there is gravity. Initially there is no upward force and so all the resultant force in the downwards direction. Then as you fall and hit air particles, there is an upward force which you face, which is called drag. This is based on surface area and velocity. Eventually as you accelerate, the drag become equal to weight. This means there is no resultant force and so no acceleration. Once the parachute is opened, the surface area increases and eventually another terminal velocity is reached. This is lower than the previous terminal velocity.
36
Finding the temperature change
Hot to cold- ti- tf Cold to hot- tf- ti
37
Scale of Celsius compared to faheraniet
1 degree increase in celcius= 1.8 increase in F.
38
Evoporation
The particles with more energy try to escape from the surface. 1. Extra energy in the particles makes it easier to leave. 2. More surface area so more particles can escape. 3. A wind/drought which can carry particles away helping in evoportation.
39
Cooling by contact
When the particles escape the liquid, the energy is also gone with the particles and so the particles left inside are cooler compared to the one left.
40
Uses of evoporation
Takes sweat away from our body. Refrigerators have air conditioning with cooling by evaporations on higher scales.
41
Define gravitational field strength
force per unit mass; this is equivalent to the acceleration of free fall g =W/m
42
Density
Mass per unit volume p=m/v
43
Procedure of volume by displacement method
44
Force (in terms of momentum)
f=ma f=m[(v-u)/t] v-u=△v momentum(△p)=△mv f=△p/t
45

Physics (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions