Achieve Indian Airforce Agniveer Vayu Physics Practice Book>Chapter 3 - Motion in a Straight Line>Exercise>Q 9

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A train 360 m long is running at a speed of 45 km/hr. In what time will it pass a bridge 140 m long?

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Important Questions on Motion in a Straight Line

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

A balloon is ascending at the rate of

14 {ms}^{- 1}

at a height of

98 m

above the ground when a packet is dropped from the balloon. After how much time and with what velocity does it reach the ground?

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

A ball is released from the top of a tower of height

h

meters. It takes

T

seconds to reach the ground. What is the position of the ball after

\frac{T}{3}

seconds?

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

A particle moves in a straight line with a constant acceleration. It changes its velocity from

10 m s^{- 1}

to

20 m s^{- 1}

while passing through a distance

135 m

In t second. The value of

t

is:

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

A particle starts its motion from rest under the action of a constant force. If the distance covered in first

10 s

is

S_{1}

and that covered in first

20 s

is

S_{2}

then

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

A bus accelerates from rest, for time

t_{1}

, at a constant rate

α

and then retards at a constant rate

β

, for time

t_{2}

, and comes to rest. Then

\frac{t_{1}}{t_{2}}

is

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

A car moving along a straight road with speed of

144 k m h^{- 1}

is brought to a stop within a distance of

200 m .

How long does it take for the car to stop?

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

It is common observation that rain clouds can be at about

1 km

altitude above the ground. If a rain drop falls from such a height freely under gravity, then what will be its speed in

k m h^{- 1}

?
(

T a k e g = 10 m s^{- 2})

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

Which of the following statement is not correct?