ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 4

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A water fountain on the ground sprinkles water all around it. If the speed of water coming out of the fountain is $u$ , the total area around the fountain that gets wet is.

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Important Questions on Motion in One and Two Dimensions

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ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 5

The displacement of a body is proportional to the cube of time. The acceleration of the body is:

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ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 6

The relation between time

t

and distance

x

is

t = a x^{2} + b x

, where

a

and

b

are constants. The acceleration is:

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ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 7

The oscillation of a body on a smooth horizontal surface is represented by the equation,

x = A \cos (ω t)

, where

x =

displacement at time

t

,

ω =

frequency of oscillation. Which one of the following graph shows correctly the variation

a

with

t

?

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ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 8

A particle of mass

m

is at rest at the origin at time

t = 0

. It is subjected to a force

F (t) = F_{0} e^{- b t}

in the

X

direction. Its speed

v (t)

is depicted by which of the following curves?

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ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 9

In $1.0 s$ , a particle goes from point $A$ to point $B$ , moving in a semicircle of radius $1.0 m$ . The magnitude of the average velocity is:

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ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 10

The velocity of a body depends on time as

v = 20 + 0.1 t^{2}

. The body is undergoing:

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ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 11

The velocity-distance graph of a particle moving along a straight line is shown in the adjoining figure. Which one of the following acceleration- distance graphs corresponds to the given velocity-distance graph?

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ISC Physics Class XI Part 1>Chapter 8 - Motion in One and Two Dimensions>FOR DIFFERENT COMPETITIVE EXAMINATIONS>Q 12

A particle starts from rest Its acceleration $(a)$ versus time $(t)$ graph is shown in the figure. The maximum speed attained by the particle is:

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