A grenade weighing 400 g, flying at a speed of 12 m / s, exploded into two fragments. A fragment with a mass of 240 g
| April 12, 2021 | education
A grenade weighing 400 g, flying at a speed of 12 m / s, exploded into two fragments. A fragment with a mass of 240 g, after breaking, acquired a speed of 25 m / s and continued to move in the same direction. Find the speed of the other shard.
Decision:
0.4 * 12 = 0.24 * 25-0.16v2
4.8 = 6 – 0.16v2 0,
16v2 = 1.2
v2 = 7.5 m / s
Answer: 7.5 m / s
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