Suppose you increase your walking speed from 7 m/s to 15 m/s in a period of 1 s. what is your acceleration?

Hi!

The answer is 8 m/s^2

Acceleration is defined as the rate of change of an object's velocity, per unit time. Meaning, the rate at which an object is increasing/decreasing its velocity with the passage of time in a given period.

If an object is moving at constant velocity, its acceleration would be 0, because there is no change in velocity. In our case, the velocity is increasing, and to calculate this, we will use a simple formula,

acceleration = change in velocity / time

and change in velocity is calculated by subtracting the value of initial velocity (u) from final velocity (v).

u = 7m/s

v = 15m/s

t= 1s

a = ?

a = u - v / t

a = 15 - 7 / 1

a = 8 m/s^2

Hope this helps!

a. they must be certified by the avma.

explanation:

mark brainliest and have a great day!

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms