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unitsi unit of force is newton unitsi unit of force is newton
forceforce is that agency which causes a body to alter its state of motion or rest it is denoted by f
newtons second law of motionthis law states that a force applied on body produce acceleration in its own direction the acceleration differs directly
examplesi a book lying on the table remains at rest until it is listed or pushed by exerting a forceiia rolling ball on the ground comes to rest
newtons first law and inertiaall the material bodies possess the property of opposing any alter in the state of rest or uniform motion when some
newtons first law of motionthis law states that a body at rest will remain at rest and a body moving with uniform velocity will carry on doing so
non-inertial frame of referencea frame which has non-uniform motion but particular acceleration is known as non-inertial frame of referencenewtons
inertial frame of reference a frame of reference which is not being accelerated and it might be at rest or moving with uniform velocity is known
frame of reference a set of reference axis needed to locate the position of an object in space is known as a frame of
do objects of different weights fall with same acceleration on the earthyes objects fall with the similar acceleration regardless of their weights at
acceleration due to gravityin the absence of air resistance all objects in free fall near the surface of the earth move in the direction of the earth
velocity- time graphthe graphs which represents the variation of velocity of an object with respect to time is known as velocity- time
instantaneous accelerationthe acceleration of the body at any certain instant during its motion is called to be an instantaneous
average accelerationthe total change in velocity of a body separated by total time taken is known as average acceleration it is denoted by a av
uniform accelerationif velocity of a body alters by equal amounts in equivalent intervals of time then the body is said to have uniform
negative acceleration or retardation of declerationif velocity of a body is reducing then its acceleration is said to be negative the direction of
positive acceleration if velocity of a body is enhancing then its acceleration is said to be positive the direction of positive acceleration is
accelerationthe time rate of change of velocity of a body is known as
uniform velocityi when instantaneous velocity and average velocity of a body are equivalent then the body moves with uniform velocityii when
instantaneous velocitythe velocity of a body at a certain instant of time is known as instantaneous
making a jam jar aquariumif a large glass tank is not available practically any glass vessel can be used as a easy aquarium if it is well stocked
making an observation nest for ants an observation nest for the study of the life story of ants can simply be made as followsmake a wooden u from
average velocitythe ratio of the total displacement to the total time taken by the body is known as average velocity and represented by v
variable or non-uniform velocityif a body covers unequal displacement in most equal intervals of time though the smallest interval may be then the
uniform velocityif a body covers equal displacements in equivalent intervals of time though the smallest intervals may be then the velocity of the