CONSERVATION OF MOMENTUM

How is momentum defined?

• The motion of an object's mass.

• The speed of an object.

• The acceleration of an object.

• The force applied to an object.

What does the law of conservation of momentum state about the total momentum of objects acting upon each other, assuming no external forces?

• It increases.

• It decreases.

• It remains unchanged.

• It becomes zero.

If a car has a mass 'm' and is moving with a velocity 'u', how is its momentum expressed?

• m + u

• m / u

• m x u

• u / m

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When two objects collide, how do the forces they exert on each other relate according to Newton's Third Law?

• They are unequal and in the same direction.

• They are equal and in the same direction.

• They are unequal and in opposite directions.

• They are equal and in opposite directions.

Which equation correctly represents the conservation of total momentum for two colliding objects (m1, m2) with initial velocities (u1, u2) and final velocities (v1, v2)?

• (m1 x v1) + (m2 x v2) = (m1 x u1) + (m2 x u2)

• (m1 x u1) - (m2 x u2) = (m1 x v1) - (m2 x v2)

• (m1 + m2) x (u1 + u2) = (m1 + m2) x (v1 + v2)

• (m1 x v1) / (m2 x v2) = (m1 x u1) / (m2 x u2)