ASVAB Mechanical
Comprehension
Force โ Ans - Any influence that causes an object to
undergo a change in speed, a change in direction, or a change
in shape.
(a push or pull)
Velocity โ Ans - Speed in a given direction
Acceleration โ Ans - A change in velocity; the rate of
change of velocity with time.
Force = Mass x Acceleration โ Ans - Mathematical
formula to determine Force
For every action (force) in nature, there is an equal (in size)
and opposite (in direction) reaction.
(i.e. if object A exerts a force on object B, then object B also
exerts an equal and opposite force on object A) โ Ans -
Isaac Newton's 3rd Law of Motion
Action & Reaction forces โ Ans - Forces always come in
pairs, known as ___ & ___ forces.
As the propellers turn, they push the water behind the boat
(action). The water reacts by pushing the boat forward
(reaction). โ Ans - Motorboat Action & Reaction force
example
Vector
Scalar โ Ans - Mathematical quantities that are used to
describe the motion of objects can be divided into two
categories. The quantity is either a ___ or a ___.
Vector โ Ans - Forces are ___ quantities.
