graphs, equations and laws of motion Flashcards
(18 cards)
what are speed and velocity measured in?
m/s
what does the gradient of a distance time graph give you?
the speed
what does the gradient in a velocity-time graph give you?
change in speeds / acceleration
equation for acceleration?
change in velocity / time
what does it mean if a velocity-time graph goes into negative numbers?
the speed has become more negative. (eg- a ball falling towards you after you throw it in the air)
what’s the accelleration for any falling object?
9.8 m/s^2
what tells you the area on a velocity-time graph?
the are between the x axis and the gradient
what are newton’s equations of motion for?
predicting what an object will do if it’s accellarating
what does s stand for?
displacement (distance)
what does u stand for?
starting velocity
what does v stand for?
final velocity
what does a stand for?
acceleration
what does t stand for?
time
whats newton’s 1st law?
when there’s no resultant force, there’s no change in velocity
what does inertia mean?
what you call an object with the tendancy to have a constant motion unless acted upon
what does terminal velocity mean?
the maximum speed an object can reach when it’s being moved by forces
what’s newton’s 2nd law?
force = mass x acceleration
what is newtons 3rd law?
for every action force, there is an equal, opposite reaction force
