FUNDAMENTALS OF MOMENTUM, HEAT AND
MASS TRANSFER CERTIFICATION EVALUATION
TEST COMPLETE QUESTIONS AND CORRECT
ANSWERS
◉ Conservation of momentum.
Answer: total momentum of a system is constant.
momentum before or after a collision or explosion is the same
◉ Force.
Answer: push or pull measured in newtons
it is vector quality
◉ balanced force.
Answer: No motion; Forces are equal to each other
◉ unbalanced forces.
Answer: Forces that produce a nonzero net force, which changes an
object's motion
, ◉ vectors.
Answer: quantities that have both a magnitude and a direction
◉ free body diagram.
Answer: a diagram showing all the forces acting on an object
◉ What does friction cause an object to do?.
Answer: Slow down and stop.
◉ What does energy become due to friction?.
Answer: Heat.
◉ What does friction do to motion?.
Answer: Opposes motion.
◉ What type of friction needs to be overcome to start moving?.
Answer: Static friction.
◉ What type of friction needs to be overcome to keep an object
moving at constant velocity?.
Answer: Sliding friction.
MASS TRANSFER CERTIFICATION EVALUATION
TEST COMPLETE QUESTIONS AND CORRECT
ANSWERS
◉ Conservation of momentum.
Answer: total momentum of a system is constant.
momentum before or after a collision or explosion is the same
◉ Force.
Answer: push or pull measured in newtons
it is vector quality
◉ balanced force.
Answer: No motion; Forces are equal to each other
◉ unbalanced forces.
Answer: Forces that produce a nonzero net force, which changes an
object's motion
, ◉ vectors.
Answer: quantities that have both a magnitude and a direction
◉ free body diagram.
Answer: a diagram showing all the forces acting on an object
◉ What does friction cause an object to do?.
Answer: Slow down and stop.
◉ What does energy become due to friction?.
Answer: Heat.
◉ What does friction do to motion?.
Answer: Opposes motion.
◉ What type of friction needs to be overcome to start moving?.
Answer: Static friction.
◉ What type of friction needs to be overcome to keep an object
moving at constant velocity?.
Answer: Sliding friction.