Flashcards
Distance time graphs
Cards in this deck (13)
- 1What is the formula for speed?Speed = Distance / time
Time = Distance / speed
Distance = Distance x time
( "/" means "divided by".) - 2How to draw a distance time graph1) Write down how far an object went in an amount of time and if the object stopped/ carried on going
3) Draw straight, sloping line, which shows the distance travelled in an amount of time. If the object stopped, draw a horizontal line for how long it stopped. - 3What does the gradient represent in a distance time graph?The gradient represents the speed. To find the speed, find the gradient of the line.
- 4What does a a) horizontal line b) straight line sloping upwards mean?Horizontal = stationary
straight line sloping up = moving at steady speed - 5VELOCITY AND ACCELERATIONp9.2
- 6what is the difference between speed and velocity?Speed is the amount of distance covered in a certain amount of time, and is a scalar quantity. Velocity shows the distance covered in a certain amount of time, too - but it shows the direction of the object as well so it is a vector quantity.
- 7What is acceleration?The acceleration of an object is it's change in velocity per second, measured in "m/s squared"
(meters per second, squared) - 8*IMPORTANT* Formula for velocitya = (v - u)/t
a = acceleration
v = final velocity
u = initial velocity
t = time taken - 9Formula for initial and final velocityv = u + at
u = v - at
a = acceleration
v = final velocity
u = initial velocity
t = time - 10What is deceleration?The change of velocity per second when an object slows down , it uses the same formula as acceleration.
- 11Velocity time graphsp9.3
- 12What does the gradient on a velocity time graph represent?The acceleration.
Negative gradient = deceleration
positive gradient = acceleration - 13What does a: a) horizontal line b) straight, sloping line mean?Horizontal = constant velocity
straight, sloping =
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- Hard. Physics Y9 Flashcards on Distance time graphs , created by Aaishah Din on 06/07/2017.
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- Aaishah Din
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