Forces

Question 1

Friction

Answer 1

The force between two surfaces, sliding over one another, that causes them to heat up and wear.

Question 2

Upthrust

Answer 2

A force pushing upwards on an object in a liquid.

Question 3

Lift

Answer 3

A force acting against any object that is moving through the earths atmosphere

Question 4

Air resistance/ drag

Answer 4

The force on an object moving through the air that causes it to slow down.

Question 5

Weight

Answer 5

The force that pulls objects towards the centre of the earth.

Question 6

Every 100g of mass weighs ????? Newtons

Answer 6

Every 100g of mass weighs 1 Newton

Question 7

Every 1kg of mass weighs ??????? Newtons

Answer 7

Every 1kg of mass weighs 10 newtons

Question 8

Speed= ?????

Answer 8

Speed= distance divided by time

Question 9

Distance= ?????

Answer 9

Distance= speed x time

Question 10

Time= ??????

Answer 10

Time= distance divided by Speed

Question 11

Weight= ??????

Answer 11

Weight= mass x gravitational field strength

Question 12

Gravitational field strength= ???????

Answer 12

Gravitational field strength= weight divided by mass.

Question 13

Mass= ??????

Answer 13

Mass= weight divided by gravitational field strength

Question 14

What unit of measurement do you weigh weight in???

Answer 14

Newtons, N

Question 15

What unit of measurement do you weigh mass in????

Answer 15

Kilograms, Kg

Question 16

What unit of measurement do you weigh gravitational field strength in?????

Answer 16

Newtons per kilograms, N/Kg

Question 17

What are the characteristics of a streamline shape????

Answer 17

1) rounded front
2) slowly tapering tail
3) smooth shape with no projection

Question 18

Force

Answer 18

Force is something that when applied to an object changes its direction or speed.
It is also a push or pull.

Question 19

Tension

Answer 19

A stretching force.

Question 20

Unbalanced

Answer 20

Opposing forces on an object that are unequal.

Question 21

Best fit line

Answer 21

A line that goes close to or through the points on a graph. It misses out any anomalies

Question 22

Anomalies

Answer 22

A result that varies greatly from the trend/ pattern

Question 23

Balanced forces

Answer 23

When two forces acting on an object are equal in size but act in opposite directions

Question 24

Driving force

Answer 24

The force that is pushing or pulling something

Question 25

Lubrication

Answer 25

A substance that reduces friction between surfaces

Question 26

When the forces on an object are unbalanced what does it do?

Answer 26

Speed up or slow down.

Question 27

When the forces on an object are balanced what does it do???

Answer 27

It remains stationary or travels at a constant pace.

Question 28

Why do Newton metres use springs????

Answer 28

They use springs because they have the same extension length per Newton applied meaning that it is constant and reliable. For each newton added it increases by a regular length of roughly 4cm.

Question 29

Why do Newton metres not use elastic bands????

Answer 29

They do not use elastic bands because they do not have the same extension length per Newton applied meaning that it is not constant and reliable.

Question 30

What do you need to remember when drawing a graph????

Answer 30

``` Use a sharp pencil and ruler. Mark the points with x’s. Increase the measurements along the x and y axis at a constant pace. Remember the title. Remember the unit of measurements. ```

Question 31

What does equilibrium mean.

Answer 31

Balanced.

Question 32

What are some examples of non-contact force???

Answer 32

Magnetic, electrostatic or gravitational force. | Magnets, electricity and gravity.

Question 33

What is non-contact force

Answer 33

A force that acts between objects not in contact.

Question 34

How do you measure density?

Answer 34

The mass divided by the volume. | Grams divided by cm squared

Question 35

What do you measure speed in?

Answer 35

Seconds, minuets, etc.

Question 36

What do you measure volume in???

Answer 36

Cm Cubed