Kinematics/Forces Flashcards

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1
Q

Vector

A

Physical Quantity that has mag and direction [examples]

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2
Q

Scalar

A

Phys quant that has mag only [examples]

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3
Q

Resultant force

A

The single vector which has same effect as og added together

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4
Q

Position

A

Vector quant that points from the reference point as the origin

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5
Q

Distance v.s displacement v.s speed v.s acceleration

A

Distance=lenggth of path travelled
Displacement=change in position
Speed=rate of change of position
Accelertion=rate of change of velocity

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6
Q

Tup=tdown

A

Time-max point=time-point of launch

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7
Q

Normal Force

A

The perp force exerted by a surface on an object in contact w/ it

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8
Q

Frictional Force

A

The force that opposes the motion of an object and acts parallel to the surface with which the object is in contact

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9
Q

Newton’s First Law

A

An object continues at a constant state of rest or uniform velocity unless it is acted upon by a net or resultant force

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10
Q

Inertia

A

Property of an object that causes it to resist to a change in its state of rest or uniform motion

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11
Q

Newton’s Second Law

A

When a net force is applied to an object of mass it accele. In the direction of the net force. The accele. Is directly proportional to the net force and inversely prop to the mass.

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12
Q

Newton’s third law

A

When object A exerts a force on object B, object B SIMULTANEOUSLY exerts an oppositely directed force of equal mag. On object A

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13
Q

Work

A

A force as the product of displacement and the component of the force parallel to the displacement

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14
Q

Power

A

The rate at which work is done

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15
Q

Efficiency

A

The ratio of output power to input power

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16
Q

Displacement

A

Rate of change of position

17
Q

Speed

A

Rate of change of distance

18
Q

Velocity

A

Rate of change of position

19
Q

Distance

A

Length of path travelled

20
Q

Normal force

A

Perp force that opposes the motion of an object that acts parallel to the surface with which the object is in contact