Achild pushes a desk with a force of 15 n to the right. the desk accelerates to the right. which of the following statements correctly represents newton’s third law and the interaction between the child and desk?


1) the desk exerted exactly 15 n of force on the child, but the force is directed to the left.

2) the desk exerted slightly more than 15 n of force on the child, but the force is directed to the left.

3) the desk exerted slightly less than 15 n of force on the child, but the force is directed to the left.

4) the desk did not exert any force on the child.

The answer to your question is: number 1

Explanation:

Third law of Newton: says that for every action ,there is an equal and opposite reaction.

So, if the child is pushing an object to the right, it will recipe the same amount of force that he is exerting to the object but in opposite direction.

Number 2 and 3 are incorrect because, because the third law of Newton says "an equal and opposite reaction", not slightly more or less.

Number 4 is wrong, it is not in agreement with Newton's third law of motion.

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e