Laws of Motion Exercises | Unit 1 | Class 10 | Physics | Science | Samacheer Kalvi English Medium
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00:00 Introduction
00:10 Choose the correct answer
04:12 Fill in the blanks
05:05 Match the following
05:35 True or false
07:45 Assertion and reason
Questions answered in this video –
1. Inertia of a body depends on
2. Impulse is equals to
3. Newtons III law is applicable
4. Plotting a graph for momentum on the X-axis and time on Y-axis. slope of momentum-time graph gives
5. In which of the following sport the turning of effect of force used
6. The unit of g is m s-2. It can be also expressed as
7. One kilogram force equals to
8. The mass of a body is measured on planet Earth as M kg. When it is taken to a planet of radius half that of the Earth then its value will be____kg
9. If the Earth shrinks to 50% of its real radius its mass remaining the same, the weight of abode on the Earth will
10. To project the rockets which of the following principle(s) is /(are) required?
11. To produce a displacement ___________is required
12. Passengers lean forward when sudden brake is applied in a moving vehicle. This can be explained by ___________
13. By convention, the clockwise moments are taken as ___________ and the anticlockwise moments are taken as__________
14. ___________ is used to change the speed of car.
15. A man of mass 100 kg has a weight of___________ at the surface of the Earth
16. Newton’s I law
17. Newton’s II law
18. Newton’s III law
19. Law of conservation of Linear momentum
20. The linear momentum of a system of particles is always conserved.
21. Apparent weight of a person is always equal to his actual weight
22. Weight of a body is greater at the equator and less at the polar region.
23. Turning a nut with a spanner having a sort handle is so easy than one with a long handle.
24. There is no gravity in the orbiting space station around the Earth. So the astronauts feel weightlessness.
25. (A): The sum of the clockwise moments is equal to the sum of the anticlockwise moments.. (R): The principle of conservation of momentum is valid if the external force on the system is zero.
26. (A): The value of g decreases as height and depth increases from the surface of the Earth.. (R): g depends on the mass of the object and the Earth.