science

Grade-9

Easy

Question

# A stone is thrown upwards. It moves upwards for some time and then starts falling down. The velocity that the stone has just before touching the ground is ___.

- Minimum
- Maximum
- Zero
- Can be anything

Hint:

### When the object started to fall down it will experience acceleration due to gravity.

## The correct answer is: Maximum

### A stone is thrown upwards. It moves upwards for some time and then starts falling down. The velocity that the stone has just before touching the ground is Maximum.

When the stone started to fall down the potential energy also started to decrease as the height is decreasing, with the decrease in potential energy the kinetic energy increases, and when the stone is just about to touch the ground it possess maximum velocity and kinetic energy.

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