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# Please help! A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00 ms-1 . The magnitude of its momentum is recorded as

A body of mass m   = 3.513 kg is moving along the x-axis with a speed of 5.00 ms-1 . The magnitude of its momentum is recorded as

• Option 1)

17.57 kg ms -1

• Option 2)

17.6 kg ms-1

• Option 3)

17.565 kg ms-1

• Option 4)

17.56 kg ms-1

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As we learnt in

Impulse Momentum Theorem -

$\vec{F}=\frac{d\vec{p}}{dt}$

$\int_{t_{1}}^{t_{2}}\vec{F}dt=\int_{p_{1}}^{p_{2}}\vec{dp}$

- wherein

If $\bigtriangleup t$  is increased, average force is decreased

Given  $m= 3.513 kg, \; \nu = 5\ ms^{-1}$

$\therefore m\nu = 17.57 m s^{-1}$

Correct option is 1.

Option 1)

17.57 kg ms -1

This is the correct option.

Option 2)

17.6 kg ms-1

This is an incorrect option.

Option 3)

17.565 kg ms-1

This is an incorrect option.

Option 4)

17.56 kg ms-1

This is an incorrect option.

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