Chapter 2 SHC Reading Quiz
The metric system, although less common in the United States, is used in science
worldwide. In the metric system, MKS represents ____ for distance, ____for weight,
and ____ for time. - correct answer meters, kilograms,
seconds
Forces involve an invisible push or pull that is measured by its - correct answer
effect on an object
Speed describes the magnitude of ____ and involves the relationship between
____and ____. - correct answer velocity, distance, time
Changes in velocity as a function of time may involve either increased speed,
known as ____ , or decreased speed, which is known as ____. - correct answer
acceleration, deceleration
Sir Isaac Newton described three laws of motion. The first law states that - correct
answer an object in motion stays in motion
Newton's second law of motion states that when a net force acts on an object, the
object - correct answer accelerates in the direction of
the force
The equation F = ma refers to Newton's second law of motion and means that the -
correct answer force is equal to mass times
acceleration
Newton's third law of motion states that for every _____, there is an equal and
opposite ____. - correct answer action, reaction
Because momentum is influenced by mass and velocity, the measure includes
components of magnitude and direction. Still, the measures for momentum are
mass times velocity (kg-m/s). - correct answer True
