Basic Flashcards
7 cards from real Fundamentals of Engineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Basic flashcards as text
A vector has components Fx = 3 N and Fy = 4 N. What is the magnitude of the resultant force?
Answer: 5 N
The magnitude is found using the Pythagorean theorem: √(3² + 4²) = √25 = 5 N.
Which of the following best describes a scalar quantity?
Answer: Temperature
Temperature has magnitude only, with no direction, making it a scalar; the others are vectors.
What is the unit of pressure in the SI system?
Answer: Pascal (Pa)
Pressure is force per unit area; 1 Pascal equals 1 N/m².
A 10 kg object is accelerated at 3 m/s². What net force is required?
Answer: 30 N
Newton's second law states F = ma = 10 kg × 3 m/s² = 30 N.
Which law states that for every action there is an equal and opposite reaction?
Answer: Newton's Third Law
Newton's Third Law of Motion describes action-reaction force pairs.
The kinetic energy of a 2 kg object moving at 6 m/s is:
Answer: 36 J
KE = ½mv² = ½ × 2 × 6² = ½ × 2 × 36 = 36 J.
Which of the following is a unit of energy?
Answer: Joule
The Joule (J) is the SI unit of energy; Watt is power, Pascal is pressure, Newton is force.