Position, Path Length and Displacement

IMPORTANT

Position, Path Length and Displacement: Overview

This topic consists of various concepts like Basic Definitions of Motion,Motion and Rest,Position of Body, etc.

Important Questions on Position, Path Length and Displacement

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IMPORTANT

The displacement x of particle moving in one dimension, under the action of a constant force is related to the time t by the equation t=x+3 where x is in meters and t in seconds. Find the displacement of the particle when its velocity is zero.

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A particle moves in a circle of radius R. Find its displacement and the distance covered for half the period of its revolution.

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A boy moves from A to B through 5 cm, B to C through 12 cm and again from C to D through 5 cm. Find his displacement.

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A particle moving along the path y=x2, from x=0 m to x=2 m. Then the distance travelled by the particle is

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IMPORTANT

A disc is rolling without slipping on a surface. The radius of the disc is R. At t=0, the top most point on the disc is A as shown in figure. When the disc completes half of its rotation, the displacement of point A from its initial position is

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EASY
IMPORTANT

Two particles move from A to C and A to D on a circle of radius R and diameter AB. If the time taken by both particles are the same, then the ratio of magnitudes of their average velocities is

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In one second, a particle goes from point A to B moving in along circle shown in figure. The magnitude of its average velocity is

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EASY
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If position of a particle is x= 5t2-20t+2, find distance and displacement at t= 4 s.

HARD
IMPORTANT

The combined frictional and air resistance on a bicyclist has the force F=av, where v is his velocity and a=4 N s m-1. At maximum effort, the cyclist can generate 400 watts propulsive power. What is his maximum speed (in m s-1) on level ground with no wind? 

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Figure shows the time-displacement curve of the particles P and Q. Which of the following statement is correct?

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A body is moving along the circumference of a circle of radius R and completes half of the revolution. Then, the ratio of the displacement to distance is 

MEDIUM
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An insect can crawl on the floor. If it starts crawling from one corner of a cubical room of slde 'a' Minimum distance it would crawl to raech the furthermost corner in the room.

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IMPORTANT

The position time graph for a particle moving on x-axis is shown here. Choose correct statement.

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A frog takes 5 leaps in forward direction and 2 leaps backward. A pot hole is 22 cm a head of the frog. If the distance covered in 1 leap is 1 cm. Find the distance travelled by frog before it falls in the pothole.

MEDIUM
IMPORTANT

An aeroplane is flying from city A to city B along path 1 . The path 1 is a circular arc whose centre coincides with the centre of the Earth. Another aeroplane is flying along path 2 from A to B. The path 2 is circular arc whose centre is at C.O is the centre of the Earth. Then,

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A person runs along a circular path of radius 5 m. If he completes half of the circle find the magnitude of the displacement vector. How far the person ran?

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A motorist travelled from town A To Town B at an average speed of 54 km/hour. On his return journey, he travelled his average speed with 60 km/hour. If the total time taken is 19/2 hours, find the distance between the two towns.

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IMPORTANT

Let x1 and x2 be the positions of an object at time t1 and t2. Then, its displacement, denoted by A, in time Δt =B, is given by the difference between the C and D position.
Here A,B,C and D refer to 

EASY
IMPORTANT

The velocity-time graph of a particle in linear motion is shown. Both v and t are in SI units. What is the displacement of the particle from the origin after 8 second.

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