Question

Assertion:Newton’s second law of motion gives the measurement of force.
Reason:According to Newton’s second law of motion, force is directly proportional to the rate of change of momentum.
(A) Both assertion and reason are correct and reason is the correct explanation for assertion.
(B) Both are correct but reason is not correct explanation for assertion
(C) Assertion is correct but reason is incorrect
(D) Both assertion and reason are incorrect

Answer 1

Hint : First of all we have to study the newton’s second law of motion and then according to the statement we have to answer this question. We have been given an assertion statement and a reason statement, we have to find out if both are correct or not.

Complete Step By Step Answer:
As we know that the newton’s second law of motion is as follows:
Newton’s second law of motion states that the force is the product of mass and acceleration of the body. Also, the rate of change of momentum is the amount of force exerted by the body.
Thus, from above statements we have
$F = \dfrac{{dp}}{{dt}} = ma$
In the above equation $F$ is force, $m$ is mass, $p$ is momentum and $a$ is acceleration.
From the above equation we conclude that the assertion is correct and the reason is also correct also the reason is the correct explanation of the assertion.
Thus, the correct answer is that Both assertion and reason are correct and reason is the correct explanation of assertion.
The correct answer is option A.

Note :
We must study both the statements carefully and then see that if both are related. If related then see how they are related to each other, because we must need to know the required information to solve such questions. Study the law and answer this question.