Question

Identify the type of motion illustrated in the given sentence:
1] Soldiers in a march past on a straight road
2] A stone falling from a certain height
3] A car moving on a curved path.
4] The movement of our chest while we are breathing.

please send a quick as possible because it is urgent

Answer 1

Answer 1: Linear Motion (Rectilinear Motion)

• While performing the march past, soldiers are bound to move on a strictly straight (linear) path without changing their direction. This means they are performing linear motion i.e. movement in a straight line.  
• Another example of Linear Motion is the movement of a lift up or down a building.

Answer 2: Linear Motion (Rectilinear Motion)

• When the stone falls from a certain height it is performing a free fall. This means the stone is moving towards the earth's surface under the influence of gravitational force.
• During free fall the stone follows a straight path without any change in its direction, towards the surface indicating it is under a linear motion.
• Another example of Linear Motion is the motion of the bullet shot from a pistol

Answer 3: Curvilinear motion

• When a car moves on a curved path, the direction of the car's velocity becomes variable. The car moves in a curved line and hence performs the curvilinear motion.
• Another Example of curvilinear motion is: the planets revolving in their orbits.

Answer 4: Periodic Motion

• Periodic motion refers to the motion that occurs repeatedly at a equal time interval.

• When we breathe, our lungs expand to fill in oxygen and relax to let out carbon dioxide. This process always occurs within the same time interval and it is a continuous process.
• Hence the movement of our chest while breathing is a periodic motion.
• Another example of Periodic Motion is the swinging of a pendulum.