4. The average Olympic runner has a mass of 67.8 kg and accelerates at 10.38
m/s2. What is the force accelerated by an Olympic runner?

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 67.8 × 10.28 = 696.984

We have the final answer as

Hope this helps you

the correct answer would be d. hope this !

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.