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Speeds of two identical cars are $u$ are $4 u$ at a specific instant. The ratio of the respective distances in which the two cars are stopped in the same time

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Important Questions on Kinematics

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 159

A particle is thrown vertically upward from ground. It experiences a constant air resistance which can produce a uniform retardation of

2 m s^{- 2}

opposite to direction of velocity of particle. The ratio of time of ascent to time of descent is

(g = 10 m s^{- 2})

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 160

A block is moving down a smooth inclined plane starting from rest at time

t = 0

. Let

S_{n}

be the distance travelled by the block in the interval

t = n - 1

t = n

. The ratio

\frac{S_{n}}{S_{n + 1}}

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 161

An alpha particle enters a hollow tube of

4 m

length with an initial speed of

1 km s^{- 1} .

It is accelerated in the tube and comes out of it with a speed of

9 km s^{- 1} .

The time for which it remains inside the tube is

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 162

A student is standing at a distance of

50 m

from the bus. As soon as the bus begins its motion with an acceleration of

1 {m s}^{- 2},

the students starts running towards the bus with a uniform velocity

u .

Assuming the motion to be along a straight road, the minimum value of

u,

so that the student is able to catch the bus is

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 163

A man throws balls with the same speed vertically upwards one after the other at an interval of

2 s

. What should be the speed of throw so that more than two balls are in the sky at any time? (Given

g = 9 \cdot 8 m s^{- 2}

)

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 164

A ball is thrown vertically upward. It has a speed of

10 m s^{- 1}

when it has reached one half of its maximum height. How high does the ball rise? Take

g = 10 m s^{- 2}

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 165

Two bodies

A

(of mass

1 kg

) and

B

(of mass

3 kg

) are dropped from a height of

16 m

and

25 m

respectively. The ratio of the time taken by them to reach the ground is

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-1>Q 166

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

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

in the third second is:

Speeds of two identical cars are u are 4u at a specific instant. The ratio of the respective distances in which the two cars are stopped in the same time

Important Questions on Kinematics

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Speeds of two identical cars are $u$ are $4 u$ at a specific instant. The ratio of the respective distances in which the two cars are stopped in the same time