题目内容

Newton’s third law of motion states:

A. The energy possessed by a mass is inversely proportional to its velocity
B. Every force has an equal and opposite inertia
C. For every force there is an action
D. Every action has an equal and opposite reaction

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The definition of velocity is the:

A. Rate of change of acceleration
B. Rate of change of displacement
C. The quantity of motion possessed by a body
D. The acceleration of a body in direct proportion to its mass

The definition of momentum is:

A. The quantity of mass possessed by a body
B. The quantity of inertia possessed by a body
C. The quantity of motion possessed by a body
D. The opposition which a body offers to a change in velocity

An aircraft’s mass is a result of:

A. Its weight
B. How big it is
C. How much matter it contains
D. Its volume

The unit of mass is the:

A. Joule
B. Watt
C. Newton
D. Kilogram

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