Question

which principle is followed in the take off of the rocket
a) first law of motion
b) newtons law of gravitation
c) conservation of momentum
d) moment of inertia​

Answer 1

Answer:

Newton law of gravitation

Explanation:

because gravity takes place

Answer 2

Answer:

a) Newton's first law of motion states that there must be a cause—which is a net external force—for there to be any change in velocity, either a change in magnitude or direction. An object sliding across a table or floor slows down due to the net force of friction acting on the object.

b) Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. Formula

formula :-

$f = g \frac{m1m2}{ {r}^{2} }$

C) conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant.

d) The moment of inertia, otherwise known as the mass moment of inertia, angular mass, second moment of mass, or most accurately, rotational inertia, of a rigid body is a quantity that determines the torque .