Speed, distance and time Flashcards
What is the equation to measure speed?
speed =distance/time
What is the equation to measure distance?
speed x time
How do you measure time?
distance/speed
what is velocity?
direction as well as speed
what is the equation for acceleration?
a=(v-u)/t
what is (V-U) in acceleration equation/
change in speed (v is final speed, u is initial speed)
What is terminal velocity?
constant speed that a freely falling object reaches when the resistance of the medium (the air) through which it is falling prevents further acceleration
what does a horizontal line on a distance/time graph mean
that a body is stationary
what does a curved line mean on distance/time graph?
a body is accelerating
What is a moment?
A turn of force on a pivot
What is the equation for moment?
Moment=Force x distance form pivot
What are moments measured in?
NM
What is the centre of an object?
point where the entire mass seems to be concentrated
What does weight mean?
Force acting on an object due to the pull of gravity
What is thrust?
A force that increase the velocity of an object
