Answer:
The final momentum of the body = 1600 kgm/s
Thus the impulse that acted on the body. = 500 N.s
Explanation:
Momentum: This can be defined as the product of mass and velocity. The S.I unit of momentum is kgm/s. Momentum is a vector quantity.
Mathematically, momentum can be expressed as
M =mv.
Where M = momentum of the object, m = mass of the object, v = velocity of the object.
Impulse acting on the object = Final momentum of the object - initial momentum of the object
I = M₂ - M₁
M₂ = I + M₁......................... Equation 1
Where I = impulse, M₁ and M₂ = Final and initial momentum.
Note:
(i) The momentum and impulse act in the same direction
(ii) impulse is also a vector quantity.
Given: M₁= 1500 kgm/s, I = 100 kgm/s.
Substituting these values into equation 1
M₂ = 1500 + 100
M₂ = 1600 kgm/s.
Thus the final momentum of the body = 1600 kgm/s
14.
I = m(v-u)............................................... Equation 2.
Where I = impulse on the object, m = mass of the object, v = final velocity, u = initial velocity.
Given: m = 100 kg, v = 15 m/s, u = 10 m/s.
I = 100(15-10)
I = 100(5)
I = 500 N.s or 500 kgm/s.
Thus the impulse that acted on the body. = 500 N.s
