Forces

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Made by
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Sirhan Zafirah
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Forces

• What is Forces?
• Kinds of Forces
• Forces and Moving Object
• Describing the Motion of an Object

• Representing Motion on a Graph
• Measuring the Motion of an Object

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What is Forces?
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• Force is push or a pull upon an object resulting
  from the object's interaction with another
  object.
• Whenever there is an interaction between two
  objects, there is a force upon each of the
  objects. When the interaction ceases, the two
  objects no longer experience the force.
• strength or energy as an attribute of physical
  action or movement.

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4 Kinds of Forces
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• Gravitational
• - Gravitational energy is potential energy
  associated with the gravitational field.
• Electrical
• -Electrical engineering is a field of
  engineering that generally deals with the study
  and application of electricity, electronics, and
  electromagnetism.
• Friction
• -The resistance that one surface or object
  encounters when moving over another.
• Magnetic
• -capable of being attracted by or acquiring the
  properties of a magnet.

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• Forces and Moving Object

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• Movement depends on the mass of an object
• Movement depends on the shape of an object
• Movement depends on the strength of the force
  applied

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Example
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Movement depends on the mass of an object
The man has to use more force to move the lorry
than to move the car.
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Movement depends on the shape of an object

• c

The boy has to use more force to push the box
than to push the ball.
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Movement depends on the strength of the force
applied
A man applying more force on a box by pushing it
with both hands. The same man applying less foce
on the same box by pushing it with one hand.
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• Describing the motion of an object

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• Describing the motion of an object by its
  position
• Describing the motion of an object by its
  direction
• Describing the motion of an object

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Example
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Describing the motion of an object by its
position
We can describe the motion of an object by
comparing its position at different times. Let us
look at the motion of two cars, A and B.

• The position of Car A is different at 10.00 a.m.
  And 10.01 a.m. So, Car A has moved.
• The position of Car B is the same at 10.00 a.m.
  and 10.01 a.m. So, Car B has not moved

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Describing the motion of an object by its
direction

• We can describe the motion of an object by
  specifying the direction in which it is moving.

C
Ex. We can say describe the motionof the girl by
saying that she walks towards the right from
Point A to Point B. Then, she turns left and
walks to Point C
B
A
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Describing the motion of an objectby its speed

• We can describe the motion of an object by
  specifying the speed at which it is moving.
• The speed of an object refers to how fast or slow
  it is moving. The speed tells ud the distance
  travelled by an object in a given time.

Car X moves a greater distance in one hour than
Car Y. So, Car X has a Greater speed than Car Y.
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Measuring the motion of an object

• Measuring Distance
• - Rulers
• - Measuring tape
• - Odometer
• Measuring Speed
• - Speedometer

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Representing motion on a graph
Ex.
Distance travelled (m) Time taken(S)
5 2
10 4
15 6
20 8

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