Forces Effects
Forces can easily change the
direction of an object
gravity of an object
density of an object
volume of an object
direction of an object
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The ‘SI’ unit of force isA. watt
B. joule
C. newton
D. kilogram
Density has ‘SI’ unit which is
A. kilogram per cubic meter
B. gram per cubic meter
C. meter per kilogram
D. meter per cubic meter
Friction between moving parts of machine causes
A. heat
B. light
C. energy
D. oil
Force can be measured by the help of
A. foci meter
B. spring balance
C. pane balance
D. both a and b
The force of friction can be reduced by the help of
A. ball bearing
B. lubricants
C. cushion surfaces
D. all of them
In order to reduce air and water resistance, objects are shaped in
A. streamline
B. oblongata
C. rectangular
D. conical
A substance will float on surface of water if its density is less than
A. liquid
B. gas
C. both a and b
D. aqueous
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