MOTION AND FORCES REVIEW
WHAT FORCE ACTS AGAINST THE MOTION OF A
FALLING OBJECT ON EARTH?
A. Gravity
B. Air Resistance
C. Inertia
D. Mass
ON THE MOON, A HAMMER AND A FEATHER FALL AT THE
SAME RATE. ON EARTH, THE HAMMER WILL FALL FASTER
THAN THE FEATHER. WHICH OF THE FOLLOWING
STATEMENTS BEST EXPLAINS THIS?
A. There is no air resistance on the moon
B. There is no gravity on the moon.
C. There is more gravity on Earth than on the moon.
D. The hammer has more mass and thus more air resistance.
SATELLITES ORBIT IN SPACE AROUND THE EARTH.
WHAT FORCE CAUSES THEM TO CONTINUE IN THEIR
CIRCULAR PATH?
A. Terminal velocity
B. Weight
C. Friction
D. Centripetal force
THE LAW OF UNIVERSAL GRAVITATION STATES
THAT ANY TWO OBJECTS IN THE UNIVERSE
A. Attract each other
B. Repel each other
C. Combine to provide a balanced force
D. Create friction
IN WHICH SITUATION WOULD THE OBJECTS HAVE
THE GREATEST GRAVITATIONAL FORCE?
A. Two 2kg objects that are 1m apart
B. Two 2kg objects that are 2m apart
C. Two 10kg objects that are 1m apart
D. Two 10kg objects that are 2m apart
WHEN THE FORCE OF AIR RESISTANCE ACTING ON A
FALLING OBJECT EQUALS THE WEIGHT OF THE OBJECT,
IT IS KNOWN AS
A. Gravity
B. Inertia
C. Terminal velocity
D. Momentum
HOW CAN YOU INCREASE THE MOMENTUM OF AN
OBJECT?
A. By decreasing its velocity
B. By increasing its mass
C. By increasing its friction
D. By decreasing its acceleration
THE TENDENCY OF AN OBJECT TO RESIST A
CHANGE IN ITS MOTION IS KNOWN AS
A. Mass
B. Inertia
C. Force
D. Balance
THE GREATER THE MASS OF AN OBJECT
A. The easier the object starts moving
B. The greater its inertia
C. The more balanced it is
D. The more space it takes up
THE FORCE OF GRAVITY ON A PERSON OR OBJECT
ON THE SURFACE OF A PLANET IS CALLED
A. Mass
B. Terminal velocity
C. Weight
D. Free fall
WHAT ONE WORD TERM CAN BE USED TO DESCRIBE
THE DIFFERENCE BETWEEN SPEED AND VELOCITY?
A. Direction
B. Time
C. Force
D. Mass
LIFTING A ROCKET OFF THE GROUND AND INTO
SPACE CAN BEST BE EXPLAINED BY
A. Inertia
B. Acceleration depends on mass and force
C. Action-reaction forces
D. Weight is affected by mass and gravity
You have one ball that is dropped and another that
is shot out at the exact same time from the same
height. Which ball hits the ground first? Explain
Same time – effect of air resistance the same for each because same surface area
and volume
Same force of gravity pushing down
An ice skater is skating forward on the ice. Either
describe all the forces acting on the ice skater or
draw a diagram labeling all of the forces. Explain
which pair of forces are balanced forces.
gravity &
ground are
balanced
gravity
sliding friction &
air resistance
push
ground
A book is sitting on the dashboard of a car that is
stopped at a traffic light. As the car starts to move
forward, the book slides backward off the
dashboard. Use the term inertia to explain what
happened.
The book wants to stay at rest because of its inertia so when it suddenly starts to
move it pushes back
OTHER THINGS TO KNOW…
Interpreting graphs
Net Forces
Calculations
Speed, Accleration, and Momentum
Use your study guide, packet from Miss Lutzkanin, and notes to review