Page 2 - HA

3 Why is it difficult for a fireman to hose,
which ejects large amount of water at a
high velocity?

4 Why is it advised to tie a rope on the
luggage while you travel by the bus?

5 Why do passengers jumping out of a
rapidly moving bus fall forward with his
face downwards, if he does not run
forward?

6 Why fruits fall down from a tree, when
its branches are shaken

7 Why an athlete runs some steps before
taking a jump?

6.Describe what happens if you are riding a skateboard and hit something (like a curb) with
the front wheels. (AVG)
7.Write Newtons First law of inertia? (BOARD)

Activity-3
EXPERIMENT: - To demonstrate Galileo’s Law of Inertia using a double-inclined plane.

Materials Required:
A glass ball, A double-inclined smooth surface.
Observation:
We observed that a ball would roll down one plane and up the opposite plane to
approximately the same height. If smoother planes were used, the ball would roll up the
opposite plane even closer to the original height.
Inference:
The ball continued to move with uniform velocity on a frictionless plane.
.

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