Adrag racing vehicle travels from 0 100 mph in 5 seconds north. what is the acceleration

8.94m/s²

Explanation:

Acceleration is defined as the change in velocity of an object with respect to time. Mathematically,

Acceleration (a) = change in velocity(∆v)/time (t) where;

Change in velocity(∆v) = final velocity (v) - initial velocity (u)

a = ∆v/t = v-u/t

Given v = 100mph u = 0mph since the vehicle travels from 0mph to 100mph, t = 5seconds

Since 1mph = 0.447m/s

100mph = 44.7m/s

Substituting this values in the formula given we have;

a = 44.7-0/5

a = 8.94m/s²

Its acceleration is 8.94m/s²

not too sure thinking it will always be directed towards the centre of the earth. could be wrong not sure

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.