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))`

30 J

40 J

10 J

20 J

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

WORK, ENERGY AND POWER
AAKASH INSTITUTE|Exercise Assignment (SECTION - D)|15 Videos
WORK, ENERGY AND POWER
AAKASH INSTITUTE|Exercise Assignment (SECTION - B)|39 Videos
WAVES
AAKASH INSTITUTE|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 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 ?

AAKASH INSTITUTE-WORK, ENERGY AND POWER-Assignment (SECTION - C)

A particle of mass M starting from rest undergoes uniform acceleration...
Text Solution
|
An engine pumps water continously through a hose. Water leave the hose...
Text Solution
|
A body of mass 1 kg is thrown upwards with a velocity 20 ms^(-1). It m...
Text Solution
|
A block of mass m attached in the lower and vertical spring The spring...
Text Solution
|
Water falls from a height of 60 m at the rate 15 kg//s to operate a tu...
Text Solution
|
A shell of mass 200g is ejected from a gun of mass 4 kg by an explosio...
Text Solution
|
A vertical spring with force constant k is fixed on a table. A ball of...
Text Solution
|
The potential energy of a long spring when stretched by 2 cm is U. If ...
Text Solution
|
A body of mass 3 kg is under a constant force which causes a displacem...
Text Solution
|
300J of work is done in slinding a 2 kg block up an inclined plane of ...
Text Solution
|
A bomb of mass 30 kg at rest explodes into two pieces of mass 18 kg ...
Text Solution
|
A force F acting on an object varies which distance x as shown in the ...
Text Solution
|
The angles between the two vectors vecA=3hati+4hatj+5hatk and vecB=3ha...
Text Solution
|
Three vectors vecA, vecB and vecC satisfy the relation vecA. vecB=0 an...
Text Solution
|
If a unit vector is represented by 0.4 hati+0.7 hatj + chatk then the ...
Text Solution
|
If a vector (2hati+3hatj+8hatk) is perpendicular to the vector (4hatj-...
Text Solution
|
The work done by an applied variable force F=x+x^(3) from x = 0 m to x...
Text Solution
|
When a body moves with a constant speed along a circle
Text Solution
|
A position dependent force F=7-2x+3x^(2) acts on a small body of mass ...
Text Solution
|
A body constrained to move in y direction is subjected to a force give...
Text Solution
|