Im not sure how to do this please help

1+3=4

4+5=9

9+7=16

as we can observe that the we have to add the odd numbers in sequence

16+9=25

25+11=36

hope this helps you

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.