Collision & Variable Mass: NEET Physics Previous Year Questions

93 previous year questions from Collision & Variable Mass. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. $When two bodies collide elastically, then$
2. $A ball is thrown vertically downwards from a height of 20 m with an initial velocity v_{0} . It collides with the ground, loses 50 % of its energy in collis\dots$
3. $A machine gun of mass 10 kg fires 20 g bullets at the rate of 180 bullets per minute with a speed of 100 m s^{- 1} each. The recoil velocity of the gun is:$
4. $A moving particle collides with a stationary particle of mass times the mass of moving particle, the fraction of its kinetic energy transferred to the stat…$
5. $Two particles A and B, move with constant velocities v_{1} and v_{2} . At the initial moment their position vectors are r_{1} and r_{2} respectiv\dots$
6. $Two bodies of mass 1 kg and 3 kg have position vectors i + 2 j + k and - 3 i - 2 j + k, respectively. The centre of mass of this system has a position vector:$
7. $A block of mass 10 kg starts sliding on a surface with an initial velocity of 9.8 m s^{- 1} . The coefficient of friction between the surface and bock is 0.5. The distance\dots$
8. $A 1 kg ball moving at 12 m s^{- 1} collides with a 2 kg ball moving in opposite direction at 24 m s^{- 1} .\dots$
9. $A ball is dropped from some height and after first collision with the ground if it reaches \frac{3}{4}^{th} of its original height, then the % loss\dots$
10. $A wedge of mass M = 4 m lies on a frictionless plane. A particle of mass m approaches the wedge with speed v . There is no friction between the particle and the plan\dots$
11. $Two particles of masses m_{1}, m_{2} move with initial velocities u_{1} and u_{2} . On collision, one of the particles get excited to higher level,\dots$
12. $A body falls freely from a height of 100 m on to the ground and rebounds to a maximum height of 36 m after collision. The coefficient of restitution bet\dots$
13. $A ball hits the floor and rebounds after an inelastic collision. In this case$
14. $The coefficient of restitution e for a perfectly elastic collision is$
15. $A body of mass M at rest explodes into three pieces, in the ratio of masses 1:1:2. Two smaller pieces fly off perpendicular to each other with velocities of 30 m s^{- 1} \dots$
16. $A spaceship in space sweeps stationary interplanetary dust. As a result, its mass increases at a rate\dots$
17. $A body of mass 2 kg makes an elastic collision with a second body at rest and continues to move in the original direction but with one fourth of its original speed. What\dots$
18. $A moving block having mass m, collides with another stationary block having mass 4 m. The lighter block comes to rest after collision. When the initial velocity of the li\dots$
19. $If the total energy transferred to a surface in time t is 6.48 \times 10^{5} J, then the magnitude of the total momentum delivered to this surface for comple\dots$
20. $Statement-1 : Two particles moving in the same direction do not lose all their energy in a completely inelastic collision. Statement-2 : Principle of conservation of mome\dots$
21. $Collision takes place between two solid spheres denoted as 1 and 2. The initial velocities of the sphere are u_{1} = 3 m / s and u_{2} = 1.5 m / s and the f\dots$
22. $A particle of mass m is dropped from a height h above the ground. At the same time another particle of the same mass is thrown vertically upwards from the ground wi\dots$
23. $A bullet of mass 0.1 kg moving horizontally with speed 400 m s^{- 1} hits a wooden block of mass 3. 9 kg kept on a horizontal rough surface. The bullet gets embedded int\dots$
24. $A moving body of mass m and velocity 3 km/hour collides with a rest body of mass 2 m and sticks to it. Now the combined mass starts to move. What will be the combine\dots$
25. $A 1 kg ball moving with a speed of 6 ms^{- 1} collides headon with a 0.5 kg ball moving in the opposite direction with a\dots$

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Collision & Variable Mass: NEET Physics Previous Year Questions

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