A body of mass 1 kg is thrown upwards wi...

A body of mass `1 kg` is thrown upwards with a velocity `20 ms^(-1)`. It momentarily comes to rest after attaining a height of `18 m`. How much energy is lost due to air friction? `(g = 10 ms^(-2))`

10J

20J

30J

40J

Text Solution

Verified by Experts

The correct Answer is:

Loss of energy `=(1)/(2)mv^(2)-mgh=20J`

Topper's Solved these Questions

NEET
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise PHYSICS|157 Videos
NEET
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTION|95 Videos
MOTION IN TWO AND THREE DIMENSION
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|47 Videos
NEET 2020
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|45 Videos

Similar Questions

Explore conceptually related problems

A body of mass 10 kg initially at rest acquires velocity 10 ms^(-1) . What is the work done ?

An object moving with a velocity of 50 ms^(-1) comes to rest after 20 s. What is its initial velocity ?

A particle of mass 2 kg is projected vertically upward with a velocity of 20 m/s . It attains maximum height of 17 m. The loss in mechanical energy due to air drag is (g = 10 ms^-2 )

A body of mass 500 g is thrown upwards with a velocity 20 ms^-1 and reaches back to the surface of a planet after 20 sec . Then the weight of the body on that planet is (Assume g to be constant) xN. Find x.

A stone of mass 1 kg is thrown with a velocity of 20ms^(-1) across the frozen surface of a lake and it comes to rest after travelling a distance of 50m. What is the magnitude of the force opposing the motion of the stone?

A stone of 1kg is thrown with a velocity of 20 ms^(-1) across the frozen surface of lake and comes to rest after travelling a distance of 50m . What is the force of friction between the stone and the ice?

A stone of 1 kg is thrown with a velocity of 20ms^(-1) across the frozen surface of a lake and comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and the ice ?

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET-MCQ

A body of mass 1 kg is thrown upwards with a velocity 20 ms^(-1). It m...
Text Solution
|
The damping force on an oscillator is directly proportional to the vel...
Text Solution
|
The motion of a particle along a straight line is described by equatio...
Text Solution
|
The horizontal range and the maximum height of a projectile are equal....
Text Solution
|
A particle has initial velocity (2 vec(i)+3 vec(j)) and acceleration (...
Text Solution
|
A car of mass 1000kg negotiates a banked curve of radius 90m on a fict...
Text Solution
|
A solid cylinder of mass 3 kg is rolling on a horizontal surface with ...
Text Solution
|
The potential energy of a particle in a force field is: U = (A)/(r^(...
Text Solution
|
Two sphere A and B of masses m(1) and m(2) respectivelly colides. A is...
Text Solution
|
Two persons of masses 55 kg and 65 kg respectively are at the opposite...
Text Solution
|
ABC is an equilateral triangle with O as its centre vec(F(1)),vec(F(2)...
Text Solution
|
When a mass is rotating in a plane about a fixed point, its angular mo...
Text Solution
|
A spherical planet far out in space has a mass M(0) and diameter D(0)....
Text Solution
|
A geostationary satellite is orbiting the earth at a height of 5R abov...
Text Solution
|
The height a which the weight of a body becomes 1//16th its weight on ...
Text Solution
|
Two sources of sound placed close to each other are wmitting progressi...
Text Solution
|
When a string is divided into three segments of length l1,l2 and l3 th...
Text Solution
|
One mole of an ideal gas goes from an initial state A to final state B...
Text Solution
|
A thermodynamics system is taken trough the cycle ABCD as shown in fig...
Text Solution
|
Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm...
Text Solution
|
If the radius of a star is R and it acts as a black body, what would b...
Text Solution
|