Home
Class 12
PHYSICS
A point mass of 1 kg collides elasticall...

A point mass of 1 kg collides elastically with a stationary point mass of 5 kg. After their collision, the 1 kg mass reverses its direction and moves with a speed of 2 m/s. Which of the following statements are correct for the system of these two masses?

A

Total momentum of the system is 3 kg m/s.

B

Momentum of 5 kg mass after collision is 4 kg m/s.

C

Kinetic energy of the center of mass is 0.75 J.

D

Total kinetic energy of the system is 4 J.

Text Solution

Verified by Experts

The correct Answer is:
A, C
Promotional Banner

Topper's Solved these Questions

  • CENTER OF MASS

    RESNICK AND HALLIDAY|Exercise Practice Questions (Linked Comprehension)|6 Videos

  • CENTER OF MASS

    RESNICK AND HALLIDAY|Exercise Practice Questions (Matrix-Match )|1 Videos

  • CENTER OF MASS

    RESNICK AND HALLIDAY|Exercise Practice Questions (Single Correct Choice )|47 Videos

  • CAPACITANCE

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTION (INTEGER TYPE)|3 Videos

  • CIRCUITS

    RESNICK AND HALLIDAY|Exercise Practice Questions (Integer Type)|3 Videos

Similar Questions

Explore conceptually related problems

A point mass of 1kg collides elastically with a stationary point mass of 5 kg. After their collision, the 1kg mass reverses its direction and moves with a speed of 2ms^-1 . Which of the following statements (s) is (are) correct for the system of these two masses?

A 6 kg mass travelling at 2.5 ms^(-1) collides head on with a stationary 4 kg mass. After the collision the 6kg mass travels in its original direction with a speed of 1 ms^(-1) . The final velocity of 4 kg mass is

A mass of 20 kg moving with a speed of 10 m / s collides with another stationary mass of . 5kg As a result of the collision, the two masses stick together. The kinetic energy of the composite mass will be

A 60 kg body moving with speed 12 m/s collides inelastically with another body of mass 50 kg moving in same direction with speed 2 m/s. After collision the 50 kg body moves with a speed of 10 m/s. The value of coefficient of restitution (e) is :-

A truck of mass 1000 kg moving with a speed of 72 km/hr collides with a stationary truck of the same mass . After the collision , the trucks get stick together and move . Calculate their common speed after collision . Is it elastic or ineleastic collision ?

A ball of mass 2 kg moving with 4 m/s collides elastically with a stationary ball. If it continues to move in original direction with 1/4th of its original velocity. Find velocity of centre of mass of system

A ball of mass 5 kg moving with speed 8 m/s collides head on with another stationary ball of mass 15 kg. If collision is perfecty inelastic, then loss in kinetic energy is

A ball of mass 5 kg moving with speed 8 m/s collides head on with another stationary ball of mass 15 kg. If collision is perfectly inelastic, then loss in kinetic energ is

A 5kg mass collides with a body at rest. After the collision, they travel together with a velocity one third the velocity of 5kg mass. The mass of the second body is

Knowledge Check

  • A point mass of 1kg collides elastically with a stationary point mass of 5 kg. After their collision, the 1kg mass reverses its direction and moves with a speed of 2ms^-1 . Which of the following statements (s) is (are) correct for the system of these two masses?

    A
    Total momentum of the system is `3kgms^-1`
    B
    Momentum of 5kg mass after collision is `4kgms^-1`
    C
    Kinetic energy of the centre of mass is 0.75J
    D
    Total kinetic energy of the system is 4J

  • A 6 kg mass travelling at 2.5 ms^(-1) collides head on with a stationary 4 kg mass. After the collision the 6kg mass travels in its original direction with a speed of 1 ms^(-1) . The final velocity of 4 kg mass is

    A
    `1 ms^(-1)`
    B
    `2.25 ms^(-1)`
    C
    `2 ms^(-1)`
    D
    `0 ms^(-1)`

  • A mass of 20 kg moving with a speed of 10 m / s collides with another stationary mass of . 5kg As a result of the collision, the two masses stick together. The kinetic energy of the composite mass will be

    A
    600 Joule
    B
    800 joule
    C
    1000 joule
    D
    1200 joule