Acceleration and Forces Flashcards
define speed
scalar property when something is fast or slow
define velocity
vector with speed and direction
equation for speed
distance/time
equation for velocity
displacement/time
define acceleration
change in velocity over time
equation for acceleration
delta v / time
define field force
force that works at a distance
define contact force
force that seems to work through touching
what are the four fundamental forces of nature
strong
electromagnetic
weak
gravity
what is the effect of strong force
holds nuclei together
what is the effect of electromagnetic force
matter interaction
effect of weak force
nucleus decay
effect of gravity
holds galaxies and planets together
what is the relative strength of strong force
1
what is the realtive strength of electromagnetic force
10^-2
what is the relative strength of weak force
10^-5
what is the relative strength of gravity
10^-39
range of strong force
10^-15 metres
range of electromagnetic force
infinite
range of weak force
10^-17 metres
range of gravity
infinite
what is newton’s first law of motion
a body remains at rest, or moves in a straight line at constant speed unless acted upon by a force
what is the use of newton’s first law in chemistry
determining the equilibrium position of atoms within a solid
