Question

a body of mass 200g is moving with a velocity of 18km/h. Calculate its momentum.........................I will mark as brainliest

Answer 1

Answer

Momentum = 1 Kg.m/s

Given

A body of mass 200 g is moving with a velocity of 18 km/h

To Find

Momentum

Concept Used

Momentum

→ It is defined as product of mass and velocity

→ P = mv

$\rm \to\ 1\ km/h=\dfrac{5}{18}\ m/s\\\\\rm \to\ 1\ Kg=1000\ g\\\\\rm \to\ 1\ g=\dfrac{1}{1000}\ Kg$

Solution

Mass of body , m = 200 g = 0.2 Kg

Velocity , v = 18 km/h = 5 m/s

Momentum , P = ? Kg.m/s

Apply formula ,

$\rm \to\ P=mv\\\\\rm \to\ P=(0.2)(5)\\\\\rm \to\ P=1\ Kg.m/s\ \; \bigstar$

So , Momentum of body , P = 1 Kg.m/s

Answer 2

✰ Given -

• Mass (m) = 200g
• Velocity = 18km/h

✰ To Find -

• Momentum (p) = ?

✰ Solution -

Let's Convert Some Measurements,

1) Mass = 0.2 kg

$⟶ m = \frac{200}{1000}$

$⟶m = \frac{\cancel{200}}{\cancel{1000}}$

$⟶m = 0.2kg$

2) Velocity = 5m/s

Now, we can apply Formula for Momentum,

$✓ \: p = mv$

Placing Values,

$⟶p = 0.2 \times 5$

$⟶p = 1kg.ms$

⛬ Momentum is 1kg.ms