P9

Question 1

acceleration

Answer 1

change of velocity per second (in metres per second per second, m/s2)

Question 2

deceleration

Answer 2

change of velocity per second when an object slows down

Question 3

displacement

Answer 3

distance in a given direction

Question 4

gradient (of a straight line graph)

Answer 4

change of the quantity plotted on the y-axis divided by the change of the quantity plotted on the x-axis

Question 5

tangent

Answer 5

a straight line drawn to touch a point on a curve so it has the same gradient as the curve at that point

Question 6

Velocity

Answer 6

speed in a given direction (in metres/second, m/s)