CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 28

MEDIUM

JEE Main

IMPORTANT

Earn 100

An NCC parade is going at a uniform speed of $6 km h^{- 1}$ through a place under a berry tree on which a bird is sitting at a height of $12.1 m$ . At a particular instant, the bird drops a berry. Which cadet (give the distance from the tree at the instant) will receive the berry on his uniform?

Important Questions on Rest and Motion : Kinematics

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 29

A ball is dropped from a height. If it takes

0.200 s

to cross the last

6.00 m

before hitting the ground, find the height from which it was dropped. (Take

g = 10 m s^{- 2}

.)

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 30

A ball is dropped from a height of

5 m

on to a sandy floor and it penetrates the sand up to

10 cm

before coming to rest. Find the retardation of the ball in sand assuming it to be uniform.

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 31

An elevator descends with uniform acceleration. To measure the acceleration, a person in the elevator drops a coin at the moment the elevator starts. The coin is

6 ft

above the floor of the elevator at the time it is dropped. The person observes that the coin strikes the floor in

1 s

. Calculate from these data the acceleration of the elevator.

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 32

A ball is thrown horizontally from a point

100 m

above the ground with a speed of

20 m s^{- 1}

. Find the time it takes to reach the ground.

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 32

A ball is thrown horizontally from a point

100 m

above the ground with a speed of

20 m s^{- 1}

. Find the horizontal distance it travels before reaching the ground.

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 32

A ball is thrown horizontally from a point

100 m

above the ground with a speed of

20 m s^{- 1}

. Find the velocity (direction and magnitude) with which it strikes the ground.

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 33

A ball is thrown at a speed of $40 m s^{- 1}$ at an angle of $60 °$ with the horizontal. Find the maximum height reached. (Use, $g = 10 m s^{- 2}$ .)

MEDIUM

JEE Main

IMPORTANT

CONCEPTS OF PHYSICS [VOLUME 1]>Chapter 3 - Rest and Motion : Kinematics>EXERCISES>Q 33

A ball is thrown at a speed of

40 m s^{- 1}

at an angle of

60 °

with the horizontal. Find the range of the ball. (Take

g = 10 m s^{- 2}

.)