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Force & Motion > Force & Motion > Flashcards

Force & Motion Flashcards

1
Q

Define Force

A

A push or pull of an object

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2
Q

Define Contact force

A

A force that is applied by objects in contact with each other. This force acts on a point of direct contact between the two objects

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3
Q

Define Non-Contact Force

A

A force which can move objects without making contact

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4
Q

Define Motion

A

Is a change in position of an object over time

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5
Q

Define Weight

A

The force of gravity acting on an object

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6
Q

Define Mass

A

The amount of material in an object

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7
Q

Define Newton

A

The unit of force

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8
Q

Define Friction

A

2 objects rubbing against each other

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9
Q

Define Unbalanced Force

A

The net force is not zero, causing an object’s speed to change

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10
Q

Define Balanced force

A

Forces acting in opposite directions are equal, giving a net force of zero

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11
Q

Formula To find Weight

A

Weight(N)= Mass(kg) x Gravity(N)

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12
Q

Formula to find Force

A

Force(N)= Mass(kg) x Acceleration(m.s-2)

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13
Q

Example of Contact Force

A
  • applied force
  • spring force
  • drag force
  • frictional force
  • normal force
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14
Q

Example of non-contact force

A
  • Magnetic Force
  • electric force
  • gravitational force
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15
Q

Newtons 1st law

A

If forces acting on an object are balanced, then the object will remain stationary or carry on at the same speed in the same direction

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16
Q

Newtons 2nd law

A

If forces acting on an object are unbalanced, then the object will accelerate in the direction that the net force acts

17
Q

Newtons 3rd law

A

When a force acts on an object, that object creates an equal but opposite force
(called action-reaction)

18
Q

Name effects of a force

A 
Can make objects move
Can make objects move faster or slower
Can stop moving objects
Can change the shape of the object
Can change the size of the object
Can change the direction in which the object moves
19
Q

Forces always have a s____ and a d______

A

spring and a direction

Force & Motion (1 decks)

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