A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded.

1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion.
2. The total momentum of the bomb fragments is the same as that of the bomb before explosion.
3. The total momentum of all the bomb fragments together is zero.

1 only

No worries! We‘ve got your back. Try BYJU‘S free classes today!

3 only

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

2 only

No worries! We‘ve got your back. Try BYJU‘S free classes today!

1, 2, and 3

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
3 only

If initial momentum of the bomb is zero when it is at rest, the total momentum of all the bomb fragments together after the explosion must add vectorially to zero, which means total momentum before and after the explosion must be the same.

Suggest Corrections

Similar questions

James combs his hair and brings the comb near some tiny pieces of paper. He finds that the comb is attracting the pieces of paper. The force of attraction on the tiny piece of paper by the comb is due to which one of the following forces?

Q. James combs his hair and brings the comb near some tiny pieces of paper. He finds that the comb is attracting the pieces of paper. Which force is responsible for the attraction?

Q. An object of mass 3m, initially at rest on frictionless horizontal surface, explodes breaking into two fragments of mass m and 2m, respectively. Which one of the following statements after the explosion is true?

Q. A farmer crossed a walnut combed chicken with a single combed one and obtained all walnut combed chickens in F

_{1}

. The genotype of the parents is

Q. A particle of mass

4 m

which is at rest explodes into four equal fragments. All four fragments scatter in the same horizontal plane. Three fragments are found to move with velocity

v

as shown in the figure. The total energy released in the process is

Join BYJU'S Learning Program

The correct option is B 3 only If initial momentum of the bomb is zero when it is at rest, the total momentum of all the bomb fragments together after the explosion must add vectorially to zero, which means total momentum before and after the explosion must be the same.

The correct option is B
3 only

If initial momentum of the bomb is zero when it is at rest, the total momentum of all the bomb fragments together after the explosion must add vectorially to zero, which means total momentum before and after the explosion must be the same.