Friction is a ____ that tries to make moving things slow or stop.
force
What happen if you rub your hands for 60 sec.
get hotter,
Slippery floor has _____ frictional force.
low
In our daily life, friction is _______.
useful or problematic
Due to friction over time, the car tyres _____.
wear out
Suggest a way to reduce the friction between your body parts.
using lotion, powder, or lubricating oil
Friction is stronger in ___ surfaces than ____ surfaces
bigger & smaller or rougher &smoother
Suggest a way to reduce a friction in the condition you are about to carry big boxes.
use trolley
Objects move more distances with ____ friction than ____friction.
less & larger
Air resistance is also known as _____
drag
Air is a mixture of _____.
gases
How can we make a parachute to fall more slowly?
to make the parachute's surface area bigger
What force or forces are acting on an falling object?
gravity and drag
