Motion

Question 1

what does a straight line on a velocity time graph mean?

Answer 1

moving at a constant velocity.
It has an acceleration of 0m/s2

Question 2

what does a diagonal line with positive correlation mean on a velocity time graph?

Answer 2

it has a constant increase in
velocity. It is accelerating at a constant rate.

Question 3

what does a diagonal line with negative correlation mean on a velocity time graph?

Answer 3

it has a constant decrease in
velocity. It is decelerating at a constant rate.

Question 4

what does a straight line and then a diagonal line going down mean on a velocity time graph?

Answer 4

The object starts with a constant velocity
then begins to decelerate.

Question 5

how do you find the total distance travelled on a velocity time graph?

Answer 5

work out the area b x h (for triangles: b x h /2) add all the areas together

Question 6

what does a straight line mean on a distance time graph?

Answer 6

the distance not changing
over time so the object is not moving. the object is stationary

Question 7

what does a diagonal line with positive correlation mean on a distance time graph?

Answer 7

shows distance is increasing
with time so the object is moving at a constant speed

Question 8

what does a steep diagonal line with positive correlation mean on a distance time graph?

Answer 8

shows more distance is covered in the same time so
the object is moving more quickly

Question 9

what does a curved line going upwards mean on a distance time graph?

Answer 9

shows the object is covering more distance for each time slot so it is accelerating

Question 10

how do you calculate acceleration?

Answer 10

Acceleration (m/s2) = change in velocity (m/s)
Time taken for change (s)

Question 11

what is the equations for acceleration?

Answer 11

a = v-u / t

v = final velocity
u = initial velocity