Forces and speed

Question 1

air resistance

Answer 1

The force of an object moving through the air that causes it to slow down (also known as drag)

Question 2

balanced

Answer 2

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

Question 3

compress

Answer 3

To squash into a smaller space.

Question 4

contact force

Answer 4

A force that acts when an object is in contact with a surface, water, or air.

Question 5

deform

Answer 5

To change shape.

Question 6

drag force

Answer 6

The force acting on an object moving through air or water that causes it to slow down.

Question 7

driving force

Answer 7

The force that is pushing or pulling something.

Question 8

elastic limit

Answer 8

The point beyond which a spring a will not return to it’s original length when the force is removed.

Question 9

electrostatic force

Answer 9

The force acting between two charged points.

Question 10

equilibrium

Answer 10

Balanced.

Question 11

extension

Answer 11

The amount by which an object gets longer when a 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 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 the same size but in opposing directions.

Question 17

kilogram (Kg)

Answer 17

Unit of mass, symbol Kg.

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 a thing 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 not in contact.

Question 24

pull

Answer 24

A type of force.

Question 25

push

Answer 25

A type of force.

Question 26

reaction

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 down 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 that are unequal.

Question 31

water resistance

Answer 31

The force on an object moving through water that causes it to slow down (also known as drag).

Question 32

weight

Answer 32

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

Question 33

upthrust

Answer 33

Upward force experienced by an object immersed in water.

Question 34

stopping distance

Answer 34

The distance travelled by a vehicle coming to an emergency stop.

Question 35

Friction

Answer 35

The force that resists the movement of an object.

Question 36

Density

Answer 36

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

Question 37

Distance-time graph

Answer 37

This can describe the motion of an object.