EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Kinematics>Assam CEE 2016>Q 6

MEDIUM

Assam CEE

IMPORTANT

Earn 100

M.S. Dhoni hits two cricket balls in the air in a $T - 20$ match. Both the balls leave his bat at the same velocity but at different angles of $30 °$ and $60 °$ respectively. If one ignores air friction and wind velocity, which of the following statements is correct? (Angles are with respect to the horizontal)

50% studentsanswered this correctly

Important Questions on Kinematics

MEDIUM

Assam CEE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Kinematics>Assam CEE 2016>Q 7

The position of a particle as a function of time is given by

\vec{r} (t) = A \cos ω t \hat{i} + B \sin ω t \hat{j}

where

A

and

B

are two real positive constants with

A > B

. The orbit of the particle looks like-

MEDIUM

Assam CEE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Kinematics>Assam CEE 2016>Q 8

The equation of motion of a body is,

\frac{d v (t)}{d t} = 9 - 3 v (t)

where,

v (t)

is the speed (in

m s^{- 1}

) at time

t

(in second). If the body was at rest at

t = 0

, then which of the following is correct?

MEDIUM

Assam CEE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Kinematics>Assam CEE 2016>Q 9

The initial velocity of a projectile is

(2 \hat{i} + 4 \hat{j}) m s^{- 1}

, where

\hat{i}

and

\hat{j}

are along horizontal and vertical directions, respectively. For

g = 10 m s^{- 2}

, the equation of the trajectory will be,

HARD

Assam CEE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Kinematics>Assam CEE 2016>Q 10

A mobile phone of mass

100 g

falls from the hand of a person through the window of a train. The train is accelerating at

1 m s^{- 2}

and just

20 s

have passed since it left the station from standstill. If the window is

2 m

above the ground. With what kinetic energy will the phone will hit the ground?

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

HARD

Assam CEE

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 3 - Kinematics>Assam CEE 2016>Q 11

A ball of mass $m$ is thrown upward with a velocity $v$ . The air exerts an average resisting force $F$ . The velocity with which the ball returns to the thrower is