Question

A constant force of 12 N acts body for 4 second Find the change
linear momentum of the body​

Answer 1

Given:-

• Constant Force Applied = 12N

• Time Taken = 4s.

To Find:-

• Change in linear Momentum. i.e, mv - mu.

FORMULAE USED

• F = ma, or F = mv - mu/t

Now,

F = ma

or,

F = mv - mu/t

12 = mv - mu/4

12 × 4 = mv - mu

48kgm/s = mv - mu

Hence, Change in linear Momentum is 48kgm/s.

MORE TO KNOW:-

There are three Newton's law of motion.

• First law states that " Every Body will reamain in state of rest or motion untill a external unbalanced force act on it in the direction of motion".

• Second law states that " The Rate of the change of momentum is Directly proportional to the force applied".

• Third law states that "For every action there is equal and opposite reaction but both act on different Bodies".

Answer 2

$\huge\underline\bold\red{Question}$

• A constant force of 12N acts body for 4 seconds Find the change of the linear momentum of the body

$\huge\underline\bold\blue{Given}$

• Force on body= 12N

• Time= 4 seconds

$\huge\underline\bold\green{Solution}$

$\textsf{Formulae Used: F= mv - mu / t}$

$\textsf{F= mv - mu / t}$

$\rightarrow$ 12= mv - mu / 4

$\rightarrow$ 12×4= mv-mu

$\rightarrow$ mv-mu= 48