An astronaut weighing 100 kg fires a bullet weighing 1 kg with a gun of 10 kg at the speed of 50 metres/second. What will be the recoil velocity of the gun?
5 cm/s
50 cm/s
0.5 cm/s
0.05 cm/s
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Match:
| List I | List II |
|---|---|
| Measuring instruments | Which measure |
| A. Anemometer | 1. Motor power |
| B. Tachometer | 2. Wind speed |
| C. Dynamometer | 3. Revolutions per minute |
| D. Barometer | 4. Atmospheric pressure |
| 5.Current from a dynamo |