An object with mass 30 kg travelling as speed of 11 m/s receives an impulse of 240 kg m/s. What is the final velocity of the object?

The final velocity of the object is 19 m/s

The impulse is given by:

Impulse = m(v - u)

where m is the mass, v is the final velocity and u is the initial velocity.

Given that impulse = 240 kgm/s, u = 11 m/s, m = 30 kg. Hence:

Impulse = m(v - u)

240 = 30(v - 11)

8 = v - 11

v = 19 m/s

The final velocity of the object is 19 m/s

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V₂ = 19 [m/s]

Explanation:

The final linear momentum will be equal to the sum of the initial momentum plus the momentum received.  By means of the following equation, we can determine the final momentum.

where:

m₁ = m₂ = mass = 30 [kg]

v₁ = velocity = 11 [m/s]

IMP₁-₂ = 240 [kg*m/s]

v₂ = final velocity [m/s]

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