Dynamics Flashcards

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1
Q

Newton’s Third Law of Motion

A

when body A exerts a force on body B, body B exerts on body A a force of the same type, equal in magnitude and opposite in direction.

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2
Q

Newton’s First Law of Motion

A

An object stays at rest or continues to move at constant velocity unless a resultant force acts on it.

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3
Q

Weight of a body

A

the force acting on the body due to a gravitational field

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4
Q

linear momentum

A

the product of its mass and its velocity
p=mv

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5
Q

Newton’s Second Law of Motion

A

the rate of change of momentum of a body is directly proportional to the resultant force acting on it and takes place in the direction of the resultant force

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6
Q

Impulse

A

Product of force and time duration of impact

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7
Q

The Principle of Conservation of Linear Momentum

A

The total linear momentum of an isolated system of interacting bodies before and after collision remains constant if no net external force acts on the system

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8
Q

Elastic Collision

A

total kinetic energy of system of bodies before and after collision remains the same

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9
Q

inelastic collision

A

total kinetic energy of system of bodies after collision is less than before

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10
Q

perfectly inelastic collision

A

masses stick together after collision

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11
Q

Mass

A

Property of a body which resists change in motion

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12
Q

Weightlessness

A

The state where a body experiences no contact forces

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13
Q

resultant force

A

the rate of change of momentum

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