Law of Conservation of Linear Momentum and Impulse

Impulse is equals to ______ .

• (a) rate of change of momentum

• (b) rate of force and time

• (c) change of momentum

• (d) rate of change of mass.

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NGSS.HS-PS2-2

Plotting a graph for momentum on the X-axis and time on Y-axis. Slope of momentum – time graph gives _____

• (a) Impulsive force

• (b) Acceleration

• (c) Force

• (d) Rate of force.

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NGSS.HS-PS2-2

To project the rockets which of the following principle(s) is / (are) required?

• Newton’s third law of motion

• Newton’s law of gravitation

• law of conservation of linear momentum

• both a and c.

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NGSS.HS-PS2-2

Which of the following is a vector quantity?

• speed

• distance

• momentum

• time

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NGSS.HS-PS2-2

NGSS.HS-PS2-4

In a collision between two objects, which of the following statements is true regarding momentum?

• The total momentum before the collision is always greater than the total momentum after the collision.

• The total momentum before the collision is equal to the total momentum after the collision.

• The total momentum before the collision is always less than the total momentum after the collision.

• Momentum is not conserved in any type of collision.

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NGSS.HS-PS2-2

The Law of Conservation of Momentum states that the total momentum of a closed system is:

• Increasing over time

• Decreasing over time

• Constant, if no external forces act on it

• Zero

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NGSS.HS-PS2-2

According to the Law of Conservation of Momentum, in the absence of external forces, the total momentum of a system

• Increases over time

• Decreases over time

• Remains constant

• Becomes zero

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NGSS.HS-PS2-2

In an elastic collision, which of the following is conserved?

• Only momentum

• Only kinetic energy

• Both momentum and kinetic energy

• Neither momentum nor kinetic energy

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In an inelastic collision, which of the following is true?

• Only momentum is conserved

• Only kinetic energy is conserved

• Both momentum and kinetic energy are conserved

• Neither momentum nor kinetic energy is conserved

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NGSS.HS-PS2-2

In any collision (crash) the ______ is ALWAYS constant

• Total Momentum

• total speed

• total Velocity

• Energy

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NGSS.HS-PS2-2