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Motion and Machines Test

Enter the letter for the matching Definition
incorrect
1.
effort distance
incorrect
2.
resistance distance
incorrect
3.
inertia
incorrect
4.
force
incorrect
5.
resistance force
incorrect
6.
balanced force
incorrect
7.
Newton’s 2nd law
incorrect
8.
work
A.
the force applied by the machine
B.
the tendency of an object to resist any change in its motion
C.
forces on an object that are equal in size and opposite in direction
D.
the distance required by the machine to move the object
E.
distance over which the effort is applied
F.
a push or pull that changes motion
G.
a force applied over a distance that causes a change in motion
H.
states that the acceleration of an object is in the same direction as the net force on the object and can be calculated by F=ma
Type the Term that corresponds to the displayed Definition.
incorrect
9.
the gravitational force exerted on an object
incorrect
10.
states that an object moving at constant velocity keeps moving at that velocity unless an unbalanced force acts on it
incorrect
11.
the sum of forces acting on an object
incorrect
12.
the force applied to the machine
incorrect
13.
ratio of the output force exerted by the machine to the input force applied to the machine
incorrect
14.
states that when one object exerts a force on a second object, the second one exets a force on the first that is equal in strength and opposite in direction
incorrect
15.
a device that makes work easier
incorrect
16.
an attractive force between any objects that depends on the masses of the objects and the distance between them

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