Share Gravity, normal forces and applied forces
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Gravity is best described as a force that…
pushes objects away from Earth
pulls objects toward Earth
only acts on moving objects
A book resting on a table remains still because…
gravity is stronger than normal force
no forces act on the book
normal force equals gravity
Which situation shows only balanced forces?
A person pushing a moving cart
A ball rolling down a hill
A book lying on a table
The normal force always acts…
perpendicular to the surface
parallel to motion
only downward
When you stand on the ground..the normal force acts…
horizontally
downward into the ground
upward from the ground
If gravity suddenly disappeared..objects would…
stay still on surfaces
fall faster
float away
A force diagram represents forces using…
lines showing motion only
arrows showing direction and size
circles showing speed
If two forces are equal and opposite..the object will…
remain at rest or move at constant speed
accelerate forward
accelerate backward
Which is an example of an applied force?
Pushing a door open
A book resting on a table
Earth pulling an object
A person pulls a rope. This is…
a normal force
gravity
an applied force
The size of an arrow in a force diagram represents…
direction only
type of object
magnitude of force
Gravity acts on…
only objects on Earth
all objects with mass
only heavy objects
When a ball is thrown upward
downward the entire time
only when falling
only at the top
gravity acts…
A box is pushed but does not move. This means…
applied force is zero
gravity disappeared
forces are balanced
Which force prevents you from sinking into the ground?
Friction only
Applied force
Normal force
A larger arrow in a force diagram means…
greater force
no force
less force
