M - Kinematics

Question 1

what is a scalar?

Answer 1

a quantity that has only magnitude (size) e.g. distance, speed

Question 2

what is a vector?

Answer 2

a quantity that has magnitude and direction e.g. position, displacement, velocity

Question 3

what is the equation for average speed?

Answer 3

average speed = total distance / total time

Question 4

what is the equation for average velocity?

Answer 4

average velocity = total displacement / total time

Question 5

what does a curved position-time graph show?

Answer 5

the velocity of an object is continually changing

Question 6

how do you find the velocity on a position-time graph?

Answer 6

by finding the gradient

Question 7

what is the equation for acceleration?

Answer 7

acceleration = change in velocity / time

Question 8

what are the standard units for acceleration?

Answer 8

m/s squared

Question 9

how to find the displacement on a velocity-time graph?

Answer 9

the area underneath the graph

Question 10

how to find the distance travelled on a speed-time graph?

Answer 10

the area underneath the graph

Question 11

what are the 5 Suvat equations?

Answer 11

v = u + at
v squared = u squared + 2as
s = ut + 1/2 at squared 
s = 1/2 (u + v)t
s = vt - 1/2 at squared