Question

An object of mass 2kg travelling along a straight line with a velocity of 8 m/s. Find it's momentum ?​

Answer 1

GIVEN :-

• Mass of the object = 2kg
• Velocity of the object = 8 m/s

TO FIND :-

• Momentum of the object which is travelling in straight line

SOLUTION :-

Momentum of a body is given by ,

$\large {\underline{\bold {\boxed {\bigstar{ \red{ \sf { \: P = mv}}}}}}}$

Where ,

• m is Mass of the body
• v is velocity of the body
• P is momentum

We have ,

• Mass of the object = 2kg
• Velocity of the object = 8m/s

$\implies \sf \: P= 2(8) \\ \\ \implies {\underline {\bold {\boxed {\blue {\sf { P = 16 \: kgm {s}^{ - 1} }}}}}}$

∴ The momentum of the given body is 16kgm/s

ADDITIONAL INFO :-

◉ Momentum is a vector quantity hence it has both magnitude and direction.

◉ Rate of change of Momentum is equal to Force acting on the body. The relation between them is given by,

$\large {\underline {\bold {\boxed {\bigstar {\red {\sf{ \: F = \frac{dp}{dt} }}}}}}}$

◉ SI unit of Momentum is kgm/s

◉ Momentum is of two types ,

1. Linear momentum
2. Angular momentum

Answer 2

Answer:

GIVEN :-

Mass of the object = 2kg

Velocity of the object = 8 m/s

TO FIND :-

Momentum of the object which is travelling in straight line

SOLUTION :-

Momentum of a body is given by ,

\large {\underline{\bold {\boxed {\bigstar{ \red{ \sf { \: P = mv}}}}}}}

★P=mv

Where ,

m is Mass of the body

v is velocity of the body

P is momentum

We have ,

Mass of the object = 2kg

Velocity of the object = 8m/s

\begin{gathered} \implies \sf \: P= 2(8) \\ \\ \implies {\underline {\bold {\boxed {\blue {\sf { P = 16 \: kgm {s}^{ - 1} }}}}}}\end{gathered}

⟹P=2(8)

⟹

P=16kgms

−1

∴ The momentum of the given body is 16kgm/s

ADDITIONAL INFO :-

◉ Momentum is a vector quantity hence it has both magnitude and direction.

◉ Rate of change of Momentum is equal to Force acting on the body. The relation between them is given by,

\large {\underline {\bold {\boxed {\bigstar {\red {\sf{ \: F = \frac{dp}{dt} }}}}}}}

★F=

dt

dp

◉ SI unit of Momentum is kgm/s

◉ Momentum is of two types ,

Linear momentum

Angular momentum