Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-2>Q 14

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A particle moves with constant speed $v$ along a regular hexagon $A B C D E F$ in same order. (i.e. $A$ to $B, B$ to $C, C$ to $D, D$ to $E, E$ to $F$ and $F$ to $A$ ). The magnitude of average velocity for its motion from $A t o C$ is

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Important Questions on Kinematics

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-2>Q 15

A ball is dropped from a height of

20 m

and rebounds with a velocity which is

\frac{3}{4}

th of the velocity with which it hits the ground. What is the time interval between the first and second bounces

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

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-2>Q 16

The velocity displacement graph of a particle moving along a straight line is shown.

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The most suitable acceleration-displacement graph will be

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-2>Q 17

An electron starting from rest has a velocity that increases linearly with time i.e.,

v = k t

, where

k = 2 {ms}^{- 2} .

The distance covered in the first

3

second is

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-2>Q 18

A body is moving from rest under constant acceleration. Let

S_{1}

be the displacement in the first

(p - 1) \sec

and

S_{2}

be the displacement in the first

p \sec

. The displacement in

{(p^{2} - p + 1)}^{th} \sec

will be

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-2>Q 19

Two cars $A and B$ are travelling in the same direction with velocities $v_{1} and v_{2} (v_{1} > v_{2}) .$ When the car $A$ is at a distance $d$ behind the car $B,$ the driver of the car $A$ applies the brake, producing uniform retardation, $a .$ There will be no collision when

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-2>Q 20

The engine of a motorcycle can produce a maximum acceleration 5 m/s². Its brakes can produce a maximum retardation 10 m/s². What is the minimum time in which it can cover a distance of 1.5 km

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Alpha Question Bank for Medical: Physics>Chapter 4 - Kinematics>Exercise-2>Q 21

A frictionless wire $A B$ is fixed on a sphere of radius $R$ . A very small spherical ball slips on this wire. The time taken by this ball to slip from $A$ to $B$ is

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