which velocity is known as "unequal displacements in equal intervals of time is moving
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it is called non uniform velocity/motion.
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If an object moves along a straight path it is said to be linear or one-dimensional motion. If an object moves along two directions at a time like that of a ball hit for a sixer in a cricket, it is two-dimensional. The haphazard motion of a honey bee can be three-dimensional.
The change in position of an object is termed displacement. It requires both direction and magnitude for its complete description and hence such physical quantities are called a vectors. The length of the path covered by a moving body is its distance and is independent of direction. Thus, such physical quantities are called scalars.
The rate of distance covered by a body is its speed and is measured in metre per second in international units. If a body covers equal distances in equal intervals of time however small the intervals may be, it has uniform speed. If a body covers unequal distances in equal intervals or equal distances in unequal intervals then it is said be moving with non-uniform speed.
• is a scalar quantity.
• Speed = distance travelled Time taken. .
• A body is said to be moving with uniform speed if it has equal intervals of time, however small these intervals may be.
• A body is said to be moving with non uniform speed if it has unequal distances in equal intervals of time or equal distances in unequal intervals of time, however small these intervals may be.
Average speed:
• Average speed = total distance travelledtotal time taken
• Instantaneous speed = lim ∆ t → 0 ∆ s ∆ t = dsdt .
• If a particle covers the 1st half of the total distance with a speed 'a' and the second half with a speed 'b'
Average speed = 2ab a+b .
• If a particle covers 1st 1/3rd of the total distance with a speed 'a', 2nd 1/3rd of the distance with a speed 'b' and 3rd 1/3rd of the distance with speed 'c'
Average speed = 3abcab+bc+ca .
• 1 kmph = 5 18 ms-1 ; 1mph = 22 15 fts-1
• For a body with uniform speed, distance travelled = speed x time.
The change in position of an object is termed displacement. It requires both direction and magnitude for its complete description and hence such physical quantities are called a vectors. The length of the path covered by a moving body is its distance and is independent of direction. Thus, such physical quantities are called scalars.
The rate of distance covered by a body is its speed and is measured in metre per second in international units. If a body covers equal distances in equal intervals of time however small the intervals may be, it has uniform speed. If a body covers unequal distances in equal intervals or equal distances in unequal intervals then it is said be moving with non-uniform speed.
• is a scalar quantity.
• Speed = distance travelled Time taken. .
• A body is said to be moving with uniform speed if it has equal intervals of time, however small these intervals may be.
• A body is said to be moving with non uniform speed if it has unequal distances in equal intervals of time or equal distances in unequal intervals of time, however small these intervals may be.
Average speed:
• Average speed = total distance travelledtotal time taken
• Instantaneous speed = lim ∆ t → 0 ∆ s ∆ t = dsdt .
• If a particle covers the 1st half of the total distance with a speed 'a' and the second half with a speed 'b'
Average speed = 2ab a+b .
• If a particle covers 1st 1/3rd of the total distance with a speed 'a', 2nd 1/3rd of the distance with a speed 'b' and 3rd 1/3rd of the distance with speed 'c'
Average speed = 3abcab+bc+ca .
• 1 kmph = 5 18 ms-1 ; 1mph = 22 15 fts-1
• For a body with uniform speed, distance travelled = speed x time.
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