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POSITION, PATH LENGTH AND DISPLACEMENT

Object in Motion

Coordinate system is convenient to specify the position of the object

An object is said to be in motion if its changes with

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Frame of reference

A rectangular coordinate system consists of three mutually perpendicular axes. If one or more coordinates of an object change with time, we say that the object is in motion

If only one of the three coordinate changes with time it is motion in

If any two of the three coordinate changes with time it is motion in

If all the three coordinate changes with time it is motion in

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Path length and Displacement

Question

a

Consider a body moves A to B then B to C (AB is perpendicular to BC).

Choose the correct statements

Answers

Path length is a vector quantity and its value is 7 m

Path length is a vector quantity and its value is 5 m

Displacement is a vector quantity and its value is 5 m

Displacement is a vector quantity and its value is 7 m

Path length is a scalar quantity and its value is 7 m

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Vector vs Scalar

Question

Scalar quantity is having magnitude only, no direction

Vector quantity is having both magnitude and direction

Select the correct option in the case of a body in motion

Hint

Displacement is the distance (path length) in a given direction

Answers

Distance is always positive , Displacement can be positive or negative , The magnitude of distance may be equal or greater the displacement

Displacement  is always positive ,  Distance can be positive or negative , The magnitude of Distance may or may not be equal to the Displacement

Distance is always positive , Displacement can be positive or negative , The magnitude of distance is always greater than displacement

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Position Time Graph

In this graph Position (x) is taken in the Y axis and Time is in X axis. Slope of the Position Time graph is the Velocity

Choose the correct alternatives

r
u
n

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