Mechanics

Question 1

difference speed & velocity

Answer 1

speed: scalar quantity
velocity: vector quantity

Question 2

gleichförmige Bewegung

Answer 2

uniform velocity

Question 3

distance travelled

Answer 3

displacement

Question 4

tension force

Answer 4

causes spring/ wire to extend

Question 5

rigid object

Answer 5

small deformation even at high tension force

Question 6

elastic material

Answer 6

return to original length when tension removed

Question 7

elastic limit

Answer 7

point at which extension goes from elastic to inelastic

Question 8

limit of proportionality

Answer 8

where material does not obey Hooke’s law anymore

often also elastic limit

Question 9

springs in series: effect on spring constant

Answer 9

half spring constant

Question 10

springs parallel: effect on spring constant

Answer 10

double spring constant

Question 11

spring constant

Answer 11

measure of rigidity

Question 12

influences on spring constant

Answer 12

cross sectional area

length

Question 13

How can the momentum of an object be changed?

Answer 13

apply force

Question 14

mass

Answer 14

quantity of object without any force/ volume

Question 15

weight

Answer 15

force exerted on body by gravity

Question 16

Luftreibung

Answer 16

aerodynamic drag

Question 17

Gravitational potential energy (GPE)

Answer 17

energy stored in an object due to its position in a
gravitational field
Höhenenergie

Question 18

nine forms of energy

Answer 18

heat
sound
light

kinetic
electric
nuclear
elastic potential
gravitational potential
chemical potential