physics

Question 1

Speed

Answer 1

ms-1

Question 2

Acceleration

Answer 2

ms-2

Question 3

Contact forces

Answer 3

Friction
Air and water resistance
Supporting structures
Machines and muscles

Question 4

Non contact forces

Answer 4

Gravitatonal forces
Magnetic
Electrostatic

Question 5

DV

Answer 5

what you measure and change during an experiment

Question 6

IV

Answer 6

isnt changed by the other variables you measure

Question 7

Newtons first law

Answer 7

An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force

Question 8

Newtons second law equations

Answer 8

Force = m x a
Mass = f➗ a
Acceleration = f➗m

Question 8

Newtons second law

Answer 8

The acceleration of an object depends upon two variables – the net force acting on the object and the mass of the objec

Question 9

Newtons third law

Answer 9

for every action (force) in nature there is an equal and opposite reaction

Question 10

Mass

Answer 10

Kg - balance or scale to work out the mass ( stays the same )

Question 11

Weight

Answer 11

N - a spring scale is used to measure ( weight can variey )

Question 12

Power

Answer 12

The rate at which work is done

Question 13

Energy

Answer 13

Required to do work - making things move or change it cannot be made or destroyed
Joules - J

Question 14

Active energy forms

Answer 14

Metal
Kenetic
Light
Sound
Electric

Question 15

Potential energy forms

Answer 15

Magnetic
Gravitational
Elastic
Mechanical

Question 16

Current electricity

Answer 16

Flow of electrons through a material. which allows the flow of electrons more easily

Question 17

Collision theory

Answer 17

For a reaction to occur between 2 substances, the particles must collide

Question 18

Conductor

Answer 18

In when some electron are free to leave they flow through
eg copper and nickel

Question 19

I

Answer 19

Current

Question 20

V

Answer 20

Voltage

Question 21

R

Answer 21

Resistance

Question 22

What is voltage

Answer 22

Tells us how much energy it provides to the componments in the circuit

Question 23

Componment used to measure current

Answer 23

Ammeter measured in amps

Question 24

Insulator

Answer 24

Where electrons are tightly held and cannot leave
eg plastic and wood

Question 25

Domain theory

Answer 25

Small reigons inside the magnetic fields called domains

Question 26

Contact forced when ballon is rubbed aganist a jumper

Answer 26

Friction

Question 27

Parallel circuit

Answer 27

Componments are connected side by side in different rows

Question 28

Series circuit

Answer 28

The comonments are connected end to end in a loop

Question 29

Ohms Law

Answer 29

Electric current is proportinal to volatge and inversely

Question 30

Electromagnets

Answer 30

You can change the magnetic field by increasing the current number of coils and adding an iron core

Question 31

Static energy

Answer 31

Objects rub together and some electrons transfer to another material

Question 32

How can static energy be dangerous

Answer 32

Electric shock due to the flow of current through the body, causing a person everything from an uncomfortable zap to falls, burns, or stopping the heart.