MOTION: Types Of Motion J S 3 E-Note 3rd Term
Week 2. Motion
OUTLINE
By the end of the lesson the students should be able to
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Definition of motion
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Distinguish between the different types of motion
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State newtons law of motion
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Deduce the equation of motion
DEFINITION OF MOTION
Motion is the change in position of an object with respect to time. It involves the displacement of an object from one point in space to another.
DIFFERENT TYPES OF MOTION
Motion can be classified into various types
Translational Motion
When an object moves in a straight line or along a curved path, its motion is called translational motion.
Rotational Motion
When an object rotates or spins about a fixed axis, its motion is called rotational motion.
Oscillatory Motion
When an object moves back and forth around a central point, it undergoes oscillatory motion.
Circular Motion
When an object moves in a circular path around a central point, its motion is called circular motion.
NEWTON’S LAWS OF MOTION:
Newton’s First Law (Law of Inertia):
An object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
Newton’s Second Law (Law of Acceleration):
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Newton’s Third Law (Action-Reaction Law):
For every action, there is an equal and opposite reaction.
EQUATION OF MOTION
The equation of motion relates an object’s displacement, velocity, acceleration, and time. It’s often expressed as:
- s=ut+1/2 at”2 (for motion under constant acceleration)
- v= u +at (relating final velocity, initial velocity, acceleration, and time)
- v*2+ u*2+ 2as (relating final velocity, initial velocity, acceleration, and displacement)
Where:
s = displacement
u = initial velocity
v = final velocity
a = acceleration
t = time.
OBJECTIVE QUESTIONS
What is motion?
- a) When an object is at rest
- b) When an object changes its position
- c) When an object disappears
- d) When an object is invisible
Which of the following is an example of motion?
- a) A parked car
- b) A sleeping cat
- c) A running dog
- d) A standing tree
What do we call the path along which an object moves?
- a) Distance
- b) Speed
- c) Route
- d) Track
When a car moves faster, its speed:
- a) Decreases
- b) Increases
- c) Stays the same
- d) Stops
If an object is not moving, it is said to be:
- a) In motion
- b) At rest
- c) Speeding
- d) Changing
Which of the following objects is in motion?
- a) A rock on the ground
- b) A book on a shelf
- c) A kite flying in the sky
- d) A pencil on a desk
What is the term for how fast an object is moving?
- a) Distance
- b) Time
- c) Speed
- d) Path
When you ride a bicycle, you are showing:
- a) Rest
- b) Motion
- c) Speed
- d) Distance
Which of these can be used to measure speed?
- a) Kilogram
- b) Meter
- c) Liter
- d) Meter per second
What happens to the position of an object in motion?
- a) It stays the same
- b) It changes
- c) It disappears
- d) It becomes invisible
If you walk from your house to school, what have you done?
- a) Stayed at rest
- b) Moved in a straight line
- c) Traveled a distance
- d) Remained in one place
What is necessary for an object to move?
- a) A push or pull
- b) A shape
- c) A sound
- d) A color
Which of these is an example of a straight-line motion?
- a) A spinning top
- b) A swinging pendulum
- c) A moving car on a straight road
- d) A bouncing ball
When a toy car moves from one place to another, it is showing:
- a) Stillness
- b) Motion
- c) Color change
- d) Sound
Which of these objects moves in a circular motion?
- a) A car on a highway
- b) The hands of a clock
- c) A sliding book
- d) A flying bird
What do we call the distance covered per unit of time?
- a) Speed
- b) Motion
- c) Rest
- d) Path
A ball rolling on the ground is an example of:
- a) No motion
- b) Circular motion
- c) Straight-line motion
- d) Random motion
What do we use to measure how far an object has traveled?
- a) Speed
- b) Distance
- c) Time
- d) Color
Which of these best describes the motion of the Earth around the sun?
- a) Linear motion
- b) Random motion
- c) Circular motion
- d) Oscillatory motion
If an object moves and then stops, what has it done?
- a) Disappeared
- b) Changed position
- c) Lost color
- d) Changed shape
Theory Questions
Explain what motion is and give two examples of objects in motion that you see every day.
Describe the difference between an object at rest and an object in motion.
Explain what speed is and how it can be measured using an example.
Discuss the different types of motion (e.g., straight-line, circular) and provide an example of each.
Describe a situation where you observed an object changing its speed and explain what caused the change in speed.
