Force And Motion 2 Question Preview (ID: 11183)
Physics.
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What force slows a box sliding across the floor?
a) acceleration
b) friction
c) velocity
d) inertia
Which of the following would describe the motion of an object accelerating?
a) speeding up
b) slowing down
c) changing direction
d) all of the above
A rocket taking off is an example of which Newton's Law?
a) An object will continue in a straight line unless acted upon by an outside force.
b) for every action there is an equal and opposite reaction.
c) the more mass an object has, the more force required to accelerate that object
d) balanced forces cause objects to accelerate.
If you push against a wall with a force of 20 N, what is the force the wall exerts back on you?
a) 20 Newtons
b) 30 Newtons
c) walls cannot exert forces
d) 10 Newtons
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) An object will remain at rest or in motion unless acted upon by an outside force.
b) the more mass an object has, the more force required to accelerate the object.
c) for every action there is an equal and opposite reaction.
d) none of the above.
If a car travels 5012 miles in 12 hours, what is the average speed of the car?
a) 417.66 mph
b) 214 mph
c) 0 mph
d) 100 mph
If you are sitting in a chair, are the forces balanced or unbalanced?
a) balanced
b) unbalanced
c) there are no forces acting when you are sitting still
d) all of the above.
An ubalanced force to the left will accelerate an object in which direction?
a) the right
b) the left
c) unbalanced forces do not accelerate objects
d) none of the above
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
c)
d)
A basketball will not move in a straight line because of which force?
a) acceleration
b) friction
c) gravity
d) balanced forces
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