Forces and Speeds

Question 1

Air resistance/ drag

Answer 1

Force of object moving through air, causing it to slow down.

Question 2

Balanced forces

Answer 2

Forces acting on object which are same size but act in opposite direction.

Question 3

Compress

Answer 3

Squash into a smaller space.

Question 4

Contact force

Answer 4

Force acting when object in contact with a suface, air or water.

Question 5

Deform

Answer 5

Change shape.

Question 6

Drag force

Answer 6

Force acting on object moving through air or water causing it to slow down.

Question 7

Driving force

Answer 7

Force that is pushing or pulling something.

Question 8

Elastic limit

Answer 8

Point beyond which a spring will not return to its original length when stretching force is removed.

Question 9

Electrostatic force

Answer 9

Force acting between two charged objects.

Question 10

Equilibrium

Answer 10

Balanced.

Question 11

Extension

Answer 11

Amount by which an object gets longer when force is applied.

Question 12

Field

Answer 12

Region where something feels a force.

Question 13

Friction

Answer 13

Force resisting movement because of contact between surfaces.

Question 14

Gravity

Answer 14

Non- contact force acting between two masses.

Question 15

Hooke’s Law

Answer 15

It says that if you double the force on an object the extension will double.

Question 16

Interaction pair

Answer 16

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

Question 17

Kilogram (kg)

Answer 17

Unit of mass- 1000g

Question 18

Lubrication

Answer 18

Substance that reduces friction between two surfaces when they rub together.

Question 19

Magnetic force

Answer 19

Force between two magnets or a magnet and a magnetic material.

Question 20

Mass

Answer 20

The amount of matter a thing is made up of.

Question 21

Newton (N)

Answer 21

Unit of force.

Question 22

Newton meter

Answer 22

Piece of equipment used to measure weight in Newtons.

Question 23

Non- contact force

Answer 23

Magnetic, electrostatic or gravitational force acting between objects not in contact.

Question 24

Pull

Answer 24

Type of force.

Question 25

Push

Answer 25

Type of force.

Question 26

Reaction

Answer 26

Support force provided by solid surface like a floor.

Question 27

Resistive forces

Answer 27

Any forces that act to slow down a moving object.

Question 28

Streamlined

Answer 28

Shaped to reduce resistance to reduce motion from air or water.

Question 29

Tension

Answer 29

A stretching force.

Question 30

Unbalanced forces

Answer 30

Opposing forces on an object that are unequal.

Question 31

Water resistance/ drag

Answer 31

Force on an object moving through water causing it to slow down.

Question 32

Weight

Answer 32

Force of Earth on object due to its mass.

Question 33

Independent variable

Answer 33

The variable that we change.

Question 34

Dependent variable

Answer 34

The variable that we measure.

Question 35

Controlled variable

Answer 35

The variable(s) that we keep the same.

Question 36

Upthrust

Answer 36

Upward force experienced by object immersed in water.

Question 37

Density

Answer 37

Calculated by dividing the mass of an object by its volume.