05-01-2018, 04:54 PM
MOTION
*Study of motion of objects - Mechanics
*The study of causes and changes in motion - Dynamics.
*Motion, is the change in position of an object with respect to time and its surroundings.
*A body is said to be in a state of rest if its position does not change with respect to its surroundings. This motionless state is said to be stationary.
*Distance covered by a body is the actual length of path travelled by a body.
*The distance travelled by a body in unit time is Speed.
Speed = Distance/Time
Velocity = Displacement / Time
Acceleration = Change in Velocity / Time
*The change in position of an object in a particular direction is called Displacement.
*The distance travelled by an object in a definite direction in unit time Velocity
*The rate of change of velocity of a moving body is called
Ans : Acceleration
*Slope of velocity time graph gives
Ans : Acceleration
*The shape of acceleration versus mass graph for constant force is
Ans : Hyperbola
*At terminal velocity the acceleration of body is zero
*If the velocity of a moving body decreases, then the change in velocity in unit time is called retardation or deceleration
*The motion restricted to a straight line is called one dimensional (Id) motion,
eg: car moving on a straight road, throwing a stone straight up.
*The motion restricted to a plane is called two dimensional (2d) motion,
eg: Projectile motion, a satellite revolving uniformly around the earth, a boat moving on a lake etc
*The motion in space is called three dimensional (3d) motion,
eg: Motion of a charged particle, a kite flying in the air etc.
*If a body is moving in a circular path, then its motion is said to be in Circular motion.
Eg: The motion of earth around the sun
*To-and-fro motion of an object is called Oscillatory motion.
eg: Pendulum of a clock
*The motion of a body in a straight line is known as Translational motion or Linear motion.
eg: The motion of a car on a road.
*The translational motion in a straight line - Rectilinear motion
eg:- The up and down movement of lifts.
*Study of motion of objects - Mechanics
*The study of causes and changes in motion - Dynamics.
*Motion, is the change in position of an object with respect to time and its surroundings.
*A body is said to be in a state of rest if its position does not change with respect to its surroundings. This motionless state is said to be stationary.
*Distance covered by a body is the actual length of path travelled by a body.
*The distance travelled by a body in unit time is Speed.
Speed = Distance/Time
Velocity = Displacement / Time
Acceleration = Change in Velocity / Time
*The change in position of an object in a particular direction is called Displacement.
*The distance travelled by an object in a definite direction in unit time Velocity
*The rate of change of velocity of a moving body is called
Ans : Acceleration
*Slope of velocity time graph gives
Ans : Acceleration
*The shape of acceleration versus mass graph for constant force is
Ans : Hyperbola
*At terminal velocity the acceleration of body is zero
*If the velocity of a moving body decreases, then the change in velocity in unit time is called retardation or deceleration
*The motion restricted to a straight line is called one dimensional (Id) motion,
eg: car moving on a straight road, throwing a stone straight up.
*The motion restricted to a plane is called two dimensional (2d) motion,
eg: Projectile motion, a satellite revolving uniformly around the earth, a boat moving on a lake etc
*The motion in space is called three dimensional (3d) motion,
eg: Motion of a charged particle, a kite flying in the air etc.
*If a body is moving in a circular path, then its motion is said to be in Circular motion.
Eg: The motion of earth around the sun
*To-and-fro motion of an object is called Oscillatory motion.
eg: Pendulum of a clock
*The motion of a body in a straight line is known as Translational motion or Linear motion.
eg: The motion of a car on a road.
*The translational motion in a straight line - Rectilinear motion
eg:- The up and down movement of lifts.