state the lows of motion and drive the equation for 2nd law of motion
Answers
Answer:
Explanation:
An object which changes it's place with respect to time, however small intervals be, is said to be in motion.
Newton gave three laws of motion.
(1) a=v-u/t
(2) ut=1/2 at^2
(3) v^2=u^2+2as
To derive 2nd law of motion,
We have to find out average velocity,
u+v/2
And,
Distance = speed×time
= u+u+at/2 ×t
=2u+at/2 × t
=2u/2 +at/2 ×t
=u + at/2 ×t
=u + at^2/2
=ut +1/2 at^2 Proved.
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Answer:
Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces. More precisely, the first law defines the force qualitatively, the second law offers a quantitative measure of the force, and the third asserts that a single isolated force doesn't exist. These three laws have been expressed in several ways, over nearly three centuries,[a] and can be summarised as follows:
First law: In an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force.[2][3]
Second law: In an inertial frame of reference, the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration a of the object: F = ma. (It is assumed here that the mass m is constant – see below.)
Third law: When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body