Forces and Speed

Question 1

I am sat on a chair, what force is pushing up on me (stopping me from sinking)?

Answer 1

Reaction Force

Question 2

What force acts on an object as it moves through the air/water and makes it slow down?

Answer 2

Air Resistance (air) /Drag (air/water)

Question 3

Balanced Forces

Answer 3

Forces acting on an object that are the same size but act in different directions

Question 4

Compress

Answer 4

To squash into a smaller space

Question 5

What are Contact Forces

Answer 5

Forces that act when the object is in contact with a surface, air or water

Question 6

Deform

Answer 6

To change shape

Question 7

What force pushes or pulls something?

Answer 7

Driving Force

Question 8

What is the name of the point when a spring will not return to its original length when force is removed?

Answer 8

Elastic Limit

Question 9

The force acting between two charged objects is called what?

Answer 9

Electrostatic Force?

Question 10

Equilibrium

Answer 10

Balanced

Question 11

Extension

Answer 11

The amount by which an object gets longer when force is applied

Question 12

Field

Answer 12

A region where something feels a force

Question 13

Friction

Answer 13

The force that resists movement because of contact between surfaces

Question 14

Gravity

Answer 14

A non-contact force that acts between two masses

Question 15

Hooke’s Law

Answer 15

The law that says that if you double the force on an object the extension will double

(Extension = Force × Spring Constant)

There is a direct proportionality between extension and input force

Question 16

Interaction Pair

Answer 16

When two objects interact there is a force on each one that is the same size but acts in opposing directions

Question 17

Kilogram (kg)

Answer 17

A unit of mass (1000g)

Question 18

Lubrication

Answer 18

A substance that reduces friction between surfaces when they rub together

Question 19

Magnetic Force

Answer 19

The force between two magnets, or a magnet and a magnetic material

Question 20

Mass

Answer 20

The amount of matter (stuff 😊 ) an object is made up of

Question 21

Newton (N)

Answer 21

The unit of force, symbol N

Question 22

Newton meter

Answer 22

A piece of equipment used to measure weight in newtons

Question 23

Non-contact Force

Answer 23

A magnetic, electrostatic, or gravitational force that acts between objects that aren’t in contact

Question 24

Pull

Answer 24

A type of force

Question 25

Push

Answer 25

A type of force

Question 26

Reaction Force

Answer 26

The support force provided by a solid surface like a floor

Question 27

Resistive Forces

Answer 27

Any forces that act to slow a moving object

Question 28

Streamlined

Answer 28

Shaped to reduce resistance to motion from air or water

Question 29

Tension

Answer 29

A stretching force

Question 30

Unbalanced

Answer 30

Opposing forces on an object that are unequal

Question 31

Weight

Answer 31

The force of the Earth on an object due to its mass

Question 32

Formula for speed

Answer 32

Average speed (m/s) = total distance (m) ÷ total time (s)

Question 33

Formula for weight

Answer 33

Weight (N) = mass (kg) x gravitational field strength (N/kg)

Question 34

Formula for density

Answer 34

Density (g/cm³) = mass (kg) ÷ volume (cm³)

Question 35

What are 3 characteristics of a streamlined shape?

Answer 35

1. Rounded front
2. Slowly tapering tail
3. Smooth shape with no projections (bumps)

Question 36

Upthrust

Answer 36

A force pushing upwards on an object in liquid

Question 37

Thrust

Answer 37

A push caused by an engine

Question 38

Lift

Answer 38

A force pushing upwards on an object flying in the air

Question 39

Resultant Force

Answer 39

Overall force (thrust - friction)

Question 40

Independent Variable

Answer 40

The thing you change in an experiment

Question 41

Dependant Variable

Answer 41

The thing you measure in an experiment

Question 42

Control Variables

Answer 42

The things in an experiment that you keep the same