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Force And Motion 2
Test Description: Physics
Instructions: Answer all questions to get your test result.
1) What force slows a box sliding across the floor?
A
velocity
B
inertia
C
acceleration
D
friction
2) Which of the following would describe the motion of an object accelerating?
A
all of the above
B
speeding up
C
changing direction
D
slowing down
3) A rocket taking off is an example of which Newton's Law?
A
balanced forces cause objects to accelerate.
B
An object will continue in a straight line unless acted upon by an outside force.
C
for every action there is an equal and opposite reaction.
D
the more mass an object has, the more force required to accelerate that object
4) If you push against a wall with a force of 20 N, what is the force the wall exerts back on you?
A
walls cannot exert forces
B
30 Newtons
C
20 Newtons
D
10 Newtons
5) An elephant has trouble changing direction quickly because of its mass. It is easy for a mouse to change direction because it is much smaller. Which of Newton's laws explains?
A
none of the above.
B
An object will remain at rest or in motion unless acted upon by an outside force.
C
for every action there is an equal and opposite reaction.
D
the more mass an object has, the more force required to accelerate the object.
6) If a car travels 5012 miles in 12 hours, what is the average speed of the car?
A
214 mph
B
100 mph
C
0 mph
D
417.66 mph
7) If you are sitting in a chair, are the forces balanced or unbalanced?
A
there are no forces acting when you are sitting still
B
balanced
C
unbalanced
D
all of the above.
8) An ubalanced force to the left will accelerate an object in which direction?
A
none of the above
B
unbalanced forces do not accelerate objects
C
the left
D
the right
9) A box with a weight of 500 N is placed on a table that can support only 450 N. Are the forces balanced?
A
yes
B
no
10) A basketball will not move in a straight line because of which force?
A
friction
B
gravity
C
balanced forces
D
acceleration
*select an answer for all questions
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