Buscar
Estás en modo de exploración. debe iniciar sesión para usar MEMORY

   Inicia sesión para empezar

level: Motion - Equations and graphs

Questions and Answers List

level questions: Motion - Equations and graphs

QuestionAnswer
what is a scalar quantitya quantity which has only magnitude
what is a vector quantitya quantity which has both magnitude and direction
give six examples of vector quantitiesdisplacement velocity acceleration force weight momentum
when do vector quantities changewhen magnitude and/or direction changes
the equations of motion relate to which 5 quantities?suvat displacement initial velocity final velocity acceleration time
name the four equations of motion - used when 3/5 suvat quantities are knownv=u+at s=ut + 1/2at² v²=u² +2as s=1/2(u+v)t
when do we use suvat equationswhen considering objects that move with uniform (constant) acceleration
when working with vectors, what must be done with vectors going in opposite directionsgive vectors going in opposite directions opposite signs (time can't be negative)
if a motion question states from rest what information about the equations is being given?initial speed = 0 u = 0
if a question states freely under gravity what information about the equations is being given?acceleration is ±9.8 metres per second due to gravity
at its maximum height, what speed is an object?0 metres per second
what does the gradient of a displacement time graph givethe velocity of the object at that time
what does the gradient on a velocity time graph givethe acceleration of the object at that time
what does the area under a velocity time graph givethe displacement
what are the corresponding acceleration-time and displacement-time graphs for this vt graph...
what are the corresponding s-t and a-t graphs for this v-t graph...
what are the corresponding s-t and a-t graphs for this v-t graph?...
describe an experiment to measure the acceleration of an object down a slopewith the following equipment: two light gates timer trolley carrying a mask (piece of card) of a known length Set up apparatus so the trolley runs down the slope and the mask on the trolley cuts the beams of both light gates. take the measurements: length of mask, time to cut first light gate, time between light gates, time to cut second light gate Calculate initial and final velocity and sub into the formula a=v-u/t
describe the experiment to measure the acceleration of an object using a double maskmeasure width of the two pieces of card attached to the trolley Place a light gate at the bottom of the slope and release the trolley. Light gate measures time taken for first card to pass through the beam. Use this to calculate initial speed. (d=vt) Do the same for the second card to find final speed. Light gate measures time taken for both cards to pass through the light gate. use a=v-u/t to calculate the acceleration.