Physics 1 And 2 Motion Matter And Forces

Front 1

Define speed and state its equation

Back 1

the rate at which someone or something moves or operates or is able to move or operate.

total distance / total time

Front 2

What is the difference between speed and velocity?

Back 2

Speed is a scaler quantity and says how fast something is going.

Velocity is a vector quantity and says how fast something is going in a certain direction.

Front 3

What are the units used for time?

Back 3

Seconds or hours

Front 4

What are the units used for distance?

Back 4

Metres or Kilometres

Front 5

What are the units used for speed?

Back 5

Kilometres per hour

Metres per second

Front 6

What is the formula for acceleration?

Back 6

Change in speed/time

Front 7

What is acceleration expressed in? m/s2

Back 7

M/S2

Front 8

How do you work out the distance from a speed-time graph?

Back 8

Separate the graph into sections it's in and find the area for each section below the line, e.g you would fine the area of section A, B, and C and add them all together.

Front 9

What is the difference between the mass and the weight of an object?

Back 9

Mass is a measure of how much matter an object or a person has. Mass resists a change in motion. Weight is a force. Weight changes according to the gravitational field (g). Weight is measuredin Newtons.

Front 10

What is the source of a gravitational field?

Back 10

The earth

Front 11

Describe the concept of, weight asthe effect of a gravitational field on a mass.

Back 11

The gravitational field of the earth is 10 but changes as you move from planet to planet therefor weight changes from planet to planet as weight is dependent on gravitational force.

Front 12

What is the formula for Weight?

Back 12

weight = mass x gravitational force

Front 13

Define density

Back 13

Density is a measure of how much mass an object contains per unit of volume. It is oftenexpressed in grams per centimetre squared (g/cm).

Front 14

What is the formula for density?

Back 14

Mass/Volume

Front 15

Describe an experiment to determine thedensity of a liquid and of a regularly shapedsolid

Back 15

-Weigh an object

- Work out the volume of the regular object and use formula.

Front 16

Describe an experiment to determine the density of a irregular shapes object

Back 16

-Weigh an object

-Take a measuring cylinder, and fill it with exactly 50cm3 of water.

-Place the object into the cylinder. \

-Read the level of the measuring cylinder.

-The difference between the new level of the water and the original level (50cm3) is the volume of the object.

Front 17

What are all forces measured in?

Back 17

Newtons

Front 18

What is the equation for Hooks law?

Back 18

Force = constant × extension (F = kx)

Front 19

What is the 'limitof proportionality' ?

Back 19

-It isthe point at which the proportionbetween the force applied and theextension is no longer direct.

-Hooke’s lawonly applies until the limit of proportionality is reached; after this point,it does not apply anymore.

Front 20

What is the equation for force?

Back 20

Force = Mass x acceleration

Front 21

Why is an object in equilibrium when it has no resultant force?

Back 21

It is being pulled equally both ways so is equal.

Front 22

How does pressure relate to force and area?

Back 22

If the amount of force is the same applied to a smaller surface area and a larger one there is going to be more pressure on the smaller surface area as it's not spread through as much, e.g. a pin.

Front 23

What is the equation for pressure?

Back 23

Pressure = Force/ area