Physics: Momentum And Impulse
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Physics: Momentum And Impulse
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25 Questions

1. A fresh egg sinks in pure water but floats in salty water. This is because
2. Which of the following illustrations is not based on the principle of pressure?
3. When a ship enters a sea from a river
4. A rocket works on the principle of conservation of
5. Which of the following illustrations is not based on the principle of pressure?
6. A man carrying a load on his back bends forward because of one of the following reasons:
7. When a small spherical body falls in a viscous fluid, its speed increases first, then decreases and eventually it acquires a constant speed called the terminal speed. The terminal speed depends upon
8. At high altitudes it is difficult to cook eggs or vegetables properly because of
9. A cylindrical block of wood floats in water with four-fifth of its volume submerged in water. The relative density of wood is
10. The ink of a pen leaks out in an airplane because
11. In an inelastic collision, state which of the following statements is true:
12. A bomb, initially at rest, explodes into a large number of tiny fragments. The total momentum of all the fragments
13. A large ship can float but a steel needle sinks because of
14. A boat carrying a number of large stones is floating in a water tank. If the stones are unloaded into the water, the level of water in the tank
15. In an inelastic collision, state which of the following statements is true:
16. A ball is moving with a speed v towards north, collides with an identical ball, moving with the same speed towards east. After the collision, the two balls stick together and move towards north-east. The speed of the combination is
17. A sprayer works on the principle expounded by
18. A hydrogen filled balloon rises in air because
19. A large ship can float but a steel needle sinks because of
20. A fresh egg sinks in pure water but floats in salty water. This is because
21. A small weight put on the pressure cooker increases the pressure of the steam because
22. A particle of mass m is moving along a straight path through the origin of coordinates with a velocity v. The angular momentum of the particle about the origin
23. A body of mass M traveling with velocity v strikes body of mass M at rest. If the two bodies stick together during the collision, the loss of KE in the collision is
24. Water has maximum density at
25. Water has maximum density at