For a body projected at an angle with the horizontal from the ground, choose the correct statement

Gravitational potential energy is maximum at the highest point.

The horizontal component of velocity is zero at highest point.

The vertical component of momentum is maximum at the highest point.

The kinetic energy (K.E.) is zero at the highest point of projectile motion.

An object moves with speed v 1 , v 2 and v 3 along a line segment A B , B C and C D respectively as shown in figure. Where A B = B C and A D = 3 A B , then average speed of the object will be :

3 v 1 v 2 v 3 v 1 v 2 + v 2 v 3 + v 3 v 1

v 1 v 2 v 3 3 v 1 v 2 + v 2 v 3 + v 3 v 1

EASY

JEE Main

IMPORTANT

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Two projectile thrown at $30 °$ and $45 °$ with the horizontal respectively, reach the maximum height in same time. The ratio of their initial velocities is

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Important Questions on Kinematics

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 2 - Kinematics>JEE Main - 26 July 2022 Shift 1>Q 138

If the initial velocity in horizontal direction of a projectile is unit vector $\hat{i}$ and the equation of trajectory is $y = 5 x (1 - x)$ . The $y$ component vector of the initial velocity is _____ $\hat{j}$

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

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 2 - Kinematics>JEE Main - 26 July 2022 Shift 2>Q 139

Two projectiles are thrown with same initial velocity making an angle of

45 °

and

30 °

with the horizontal respectively. The ratio of their respective ranges will be

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 2 - Kinematics>JEE Main - 26 July 2022 Shift 2>Q 140

\vec{A} = (2 \hat{i} + 3 \hat{j} - \hat{k}) m

and

\vec{B} = (\hat{i} + 2 \hat{j} + 2 \hat{k}) m

. The magnitude of component of vector

\vec{A}

along vector

\vec{B}

will be _____

m

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 2 - Kinematics>JEE Main - 27 July 2022 Shift 1>Q 141

A bullet is shot vertically downwards with an initial velocity of

100 m s^{- 1}

from a certain height. Within

10 s

, the bullet reaches the ground and instantaneously comes to rest due to the perfectly inelastic collision. The velocity-time curve for total time

t = 20 s

will be : (Take

g = 10 m s^{- 2}

)

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 2 - Kinematics>JEE Main - 27 July 2022 Shift 1>Q 142

A ball of mass

m

is thrown vertically upward. Another ball of mass

2 m

is thrown an angle

θ

with the vertical. Both the balls stay in air for the same period of time. The ratio of the heights attained by the two balls respectively is

\frac{1}{x}

. The value of

x

is _____ .

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 2 - Kinematics>JEE Main - 27 July 2022 Shift 2>Q 143

A body of mass

10 kg

is projected at an angle of

45 °

with the horizontal. The trajectory of the body is observed to pass through a point

(20, 10)

. If

T

is the time of flight, then its momentum vector, at time

t = \frac{T}{\sqrt{2}}

, is _____ .
[Take

g = 10 m s^{- 2}

]

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 2 - Kinematics>JEE Main - 27 July 2022 Shift 2>Q 144

The velocity of the bullet becomes one third after it penetrates

4 cm

in a wooden block. Assuming that bullet is facing a constant resistance during its motion in the block. The bullet stops completely after travelling at

(4 + x) cm

inside the block. The value of

x

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 2 - Kinematics>JEE Main - 28 July 2022 Shift 1>Q 145

A NCC parade is going at a uniform speed of

9 km h^{- 1}

under a mango tree on which a monkey is sitting at a height of

19.6 m

. At any particular instant, the monkey drops a mango. A cadet will receive the mango whose distance from the tree at time of drop is :
(Given

g = 9.8 m s^{- 2}

)

Two projectile thrown at 30° and 45° with the horizontal respectively, reach the maximum height in same time. The ratio of their initial velocities is

Important Questions on Kinematics

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Two projectile thrown at $30 °$ and $45 °$ with the horizontal respectively, reach the maximum height in same time. The ratio of their initial velocities is