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Science CBSE Homework Assignments
Class 9
Force and Laws of motion
Introduction to force
1.
Properties of force
Question:
2
m.
Choose the correct answer
:
1
.
A ball rolls on the floor stops rolling after reaching a certain distance. It is due to _______ force.
gravitational
electrostatic
muscular
friction
2
.
In Galileo's experiment the velocity of the marble__________ when it climbs up.
zero
increases
remains same
decreases
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