162 WATER BOTTLES IN 9 CASES =

For this case, what we must do is divide the total number of bottles among the number of cases.

We have then:

Making the corresponding calculation we have:

We observe that the rate of water bottles per case is equal to 9.

the water bottle rate per case is equal to 9.

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.