An explosion breaks a rock into three pa...

An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of `12" m s"^(-1)` and the second part of mass 2 kg moves with `8" m s"^(-1)` speed. If the third part flies off with `4" m s"^(-1)` speed, then its mass is

7 kg

4 kg

3 kg

5 kg

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

FORCE
TARGET PUBLICATION|Exercise Competitive Theinking (Miscellaneous)|31 Videos
ELECTROSTATICS
TARGET PUBLICATION|Exercise EXCERCISE|156 Videos
FRICTION IS SOLIDS AND LIQUIDS
TARGET PUBLICATION|Exercise MCQ (EVALUATION TEST)|21 Videos

Similar Questions

Explore conceptually related problems

An explosion blows a rock into three parts. Two parts go off at right angles to each other . These two are 1 kg first part moving with a velocity of 12 ms^(-1) and 2 kg second part moving with a velocity of 8 ms^(-1) . If the third part flies off with a velocity of 4 ms^(-1) . Its mass would be

A body of mass 2 kg moves with a velocity of 5 m/s. Find its kinetic energy.

What is the de Broglie wavelength of, a ball of mass 0.060 kg moving at a speed of 1.0 ms^-1

If a solid sphere of mass 1 kg rolls with linear speed of 1m/s, then the rolling kinetic energy will be

What is the de Broglie wavelength of, a bullet of mass 0.040 kg travelling at the speed of 1.0 km s^-1

What is the de Broglie wavelength of a 2 kg mass moving with a velocity of 10 m/s?

A bodyof mass 2 kg moves at speed of 4 m//s and makes head on collision with body of mass 1 kg moving with speed 2 m//s in opposite direction. What is velocity of two bodies after collision?

A body of mass m = 3.513 kg is moving along the x-axis with a speed of 5.00ms^(-1) . The magnetude of its momentum is recorded as

A stationary body of mass 3 kg explodes into three equal pieces. Two of the pieces fly off at right angles to each other, one with a velocity 2hati m/s and the other with a velocity 3hatj m/s. If the explosion takes place in 10^(-5) s, the average force acting on the third piece in newton is

The average force necessary to stop a bullet of mass 20 g moving with a speed of 250 m//s , as it penetrates into the wood for a distance of 12 cm is

TARGET PUBLICATION-FORCE -Evaluation Test

A hammer og mass M falls from height h to drive a pile of mass m into ...
Text Solution
|
The momentum of a body of mass 8 kg is 20 kg m/s. A force of 12 N acts...
Text Solution
|
A 1 kg ball moving with a speed of 20 m/s strikes a hard wall at an an...
Text Solution
|
A particle moves in the x-y plane under the influence of a force such ...
Text Solution
|
A system of two particles is having masses m(1) and m(2). If the parti...
Text Solution
|
Three masses of 2 kg, 12 kg and 4 kg are connected to each other with ...
Text Solution
|
Two balls of masses 4 g and 10 g are moving with kinetic energies in t...
Text Solution
|
A rope of mass 0.2 kg is connected at the same height of two opposite...
Text Solution
|
A body of mass 4m is split into two equal parts by an internal explosi...
Text Solution
|
Assertion : The centre of mass of a body may lie where there is no mas...
Text Solution
|
Particle A makes a perfectly elastic collision with anther particle B ...
Text Solution
|
Assertion: For the object moving on the earth, earth is non-inertial f...
Text Solution
|
An explosion breaks a rock into three parts in a horizontal plane. Two...
Text Solution
|
Three identical spheres each of radius R are placed thouching each oth...
Text Solution
|
A circket ball of mass m is bowled at a batsman and gets to the bat tr...
Text Solution
|
There blocks of masses m(1),m(2) and m(3) are connected by massless st...
Text Solution
|
Two glass balls, two ivory balls, two cork balls, two cast iron balls,...
Text Solution
|
A hollow metallic bob is filled with a liquid. A small hole is drilled...
Text Solution
|