forces

Question 1

what is a force?

Answer 1

• a pull, push or twist

Question 2

what is a newton meter?

Answer 2

• a piece of equipment that is used to measure weight in Newtons

Question 3

what is a streamlined object?

Answer 3

• an object that is shaped to reduce resistance from air or water

Question 4

what does it mean if an object had unbalanced forces?

Answer 4

• it means that one force is pushing or pulling on the object more than the other

Question 5

what is air resistance?

Answer 5

• the force on an object moving through the air causing to to slow down or float

Question 6

what does it mean if an object has balanced forces?

Answer 6

• the forces acting on it are equal

Question 7

what is drag force?

Answer 7

• the force slowing an object that is moving through the air or water down

Question 8

what is driving force?

Answer 8

• the force that is pushing or pulling something

Question 9

what is equilibrium?

Answer 9

• balanced [force]

Question 10

what is a field (not the farm type)?

Answer 10

• a region where something feels a force

Question 11

what is friction?

Answer 11

• the force that resists movement between 2 surfaces

Question 12

what is gravity?

Answer 12

• the force pulling everything down to the centre of the earth

Question 13

how do you calculate speed?

Answer 13

• distance / time

Question 14

how do you calculate time?

Answer 14

• distance / speed

Question 15

how do you calculate distance?

Answer 15

• speed x time

Question 16

what is weight?

Answer 16

• the amount of gravity acting on you

Question 17

what is mass?

Answer 17

• how much ‘stuff’ there is in you

Question 18

what is magnetic force?

Answer 18

• the force between 2 magnets

Question 19

what is a Newton?

Answer 19

• a measurement of weight

Question 20

what is a reaction?

Answer 20

• the support force provided by a solid surface

Question 21

what are resistive forces?

Answer 21

• any force that slows down a moving object

Question 22

what is water resistance?

Answer 22

• the force that slows down objects moving in the water

Question 23

what is Hooke’s law?

Answer 23

• the fact that if you double the force on an object the extension will double

Question 24

what is elastic limit?

Answer 24

• the point where a spring will not return to its original length when the force is removed

Question 25

what does it mean if something ‘deforms’?

Answer 25

• it changes shape

Question 26

what is tension?

Answer 26

• a stretching force

Question 27

what do you measure weight in?

Answer 27

• newtons

Question 28

what is lubrication?

Answer 28

• a substance that reduces friction between surfaces when they rub together

Question 29

what is electrostatic force?

Answer 29

• the force acting between 2 charged objects

Question 30

what do you do when you compress something?

Answer 30

• squish it into a smaller space