What is the length in units of segment cd

B.  7.2

Step-by-step explanation:

Triangle ABC is a right angle triangle. And

We know that,

Here,

As

Again in triangle ACD,

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.

10 miles

step-by-step explanation: