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Transcript
1. When an object is moving what effect will a balanced force
have on the object?
A. The object will start moving
faster.
B. The object will slow down.
C. The object will speed up to a
steady speed
D. The object will not move.
2. What force acts upward and
is an opposite force to gravity?
A. Weight
B. Reaction
C. Gravity Support
D. Air Resistance
3. Describe the motion of a
stationary object if an unbalanced
force acts on it.
A. The object will remain stationary.
B. The object will decelerate.
C. The object will begin moving
(accelerate)
D. The object will accelerate and
decelerate.
4.
Newton's first law of motion states that an object
will keep a constant velocity unless acted upon by
an unbalanced force.
To test this statement, Martin rolled a ball on a long,
level street. The ball did not bump into any object,
but it eventually came to a stop. How is this
possible?
A. Every moving object must come to a stop
because energy cannot be destroyed.
B. The unbalanced force that caused the ball to
stop was friction.
C. Newton's first law of motion only holds true in
space, not on Earth.
D. Martin did not roll the ball hard enough, which
caused the ball to eventually stop rolling.
5. Force is measured in which
units?
A. Degrees
B. Newtons
C. Meter
D. Grams
6. Speeding up, slowing down,
and changing direction are
all examples of _______.
A. fluid friction
B. velocity
C. acceleration
D. Speed
7. According to Newton’s second
law, acceleration depends on
the mass of the object and the
__________.
A. size of the force.
B. direction of the force.
C. distance traveled.
D. speed of the object.
8. Why does a flat sheet of paper
fall more slowly than a sheet of
paper crumpled into a ball?
A. the crumpled sheet has less
mass than the flat sheet.
B. The flat sheet has no net force.
C. The flat sheet has a larger
surface area and so air resistance
is greater.
D. The crumpled sheet has greater
9. The force of friction exists
between objects that
______.
A. are moving
B. have different masses
C. are in contact
D. have rough surfaces
10. If balanced forces act on an
object, the object ______.
A. stays in the same position.
B. changes velocity.
C. changes direction.
D. stops moving.