Worksheetsfriction force
Total questions: 17
Worksheet time: 12mins
The friction force is a contact force.
TRUE
FALSE
Without friction, an object in motion would never stop.
true
false
When we rub our hands together _________.
frictional force works between them
energy is released
our hands become warm
all off the above
A contact force between two surfaces in touch is called....................
gravity
friction
inertia
Which surface has more friction force?
rough surface
smooth surface
both together
The effect of the friction force is to.................the speed of an object.
speed up
slowdown
Which object would have more friction force?
light object
heavy object
long object
What causes an object to fall faster?
Smaller surface area
Larger surface area
If it has a parachute
The larger the surface area of the moving object, the ___________ air resistance there is.
Less
More
Longer
When dropped from the same distance, which will fall to the floor faster?
Look at the pictures of the cars. Which car will have the most air resistance force acting upon it? They will be moving at the same speed.
All will have equal air resistance force.
What is a parachute designed to maximize?
Gravity
Air Pressure
Air Resistance
Air resistance pushes against falling
objects and __________________.
Speeds them up
Keeps them afloat
Slows them down
Air resistance is produced between an object and.....................
another object
air
water
Water resistance is produced between an object and.....................
another object
air
water
draw the direction of air resistance force that affects this parachute
up or down
