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```				   A ball is projected vertically up with a velocity of 40m/s from ground.At the same time another ball is dropped from a height of 100m.The magnitude of their velocities are equal after this time [g=10m/s]
```

6 years ago

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### Answers : (1)

```										for first ball,
v=40-10t
for second ball,
v=10t

equating both, t=2s
```
6 years ago

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