Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 3

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The displacement-time graphs of two moving particles make angles of $30 °$ and $45 °$ with the $x$ -axis. The ratio of the two velocities $(\frac{v_{1}}{v_{2}})$ is

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Important Questions on Motion in a Straight Line

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Agniveer Vayu

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 4

The distance travelled by a particle starting from rest and moving with an acceleration

\frac{4}{3} m s^{- 2}

in

3^{r d}

second is

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 5

A particle moves along the

X

axis in such a way that its coordinate

(x)

varies with time

(t)

according to the expression

x = 2 - 5 t + 6 t^{2}

metre. The initial velocity of the particle is:

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 6

The position

x

of a particle with respect to time

t

along

x

-axis is given by

x = 9 t^{2} - t^{3}

where

x

is in metres and t in seconds. What will be the position of this particle when it achieves maximum speed along the

+ x

direction?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 7

For uniform acceleration in rectilinear motion, which of the following is not correct?

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 8

Figure shows the position-time (

x - t

) graph of one dimensional motion of a body of mass

500 g .

What is the interval between two consecutive impulses received by the body?
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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 9

The $x - t$ graph shown in figure represents.

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 1

Assertion: The speed of a body can be negative.
Reason: If the body is moving in the opposite direction of positive motion, then its speed is negative.

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Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 2

A car moving on a straight road covers one third of the distance with

20 km h^{- 1}

and the rest with

60 km h^{- 1}

. The average speed of the car is,