Fundamentals of Engineering Basic 2

Question 1

A vector has components Fx = 3 N and Fy = 4 N. What is the magnitude of the resultant force?

Accepted Answer

5 N

Answer

The magnitude is found using the Pythagorean theorem: √(3² + 4²) = √25 = 5 N.

Question 2

Which of the following best describes a scalar quantity?

Accepted Answer

Temperature

Answer

Temperature has magnitude only, with no direction, making it a scalar; the others are vectors.

Question 3

What is the unit of pressure in the SI system?

Accepted Answer

Pascal (Pa)

Answer

Pressure is force per unit area; 1 Pascal equals 1 N/m².

Question 4

A 10 kg object is accelerated at 3 m/s². What net force is required?

Accepted Answer

30 N

Answer

Newton's second law states F = ma = 10 kg × 3 m/s² = 30 N.

Question 5

Which law states that for every action there is an equal and opposite reaction?

Accepted Answer

Newton's Third Law

Answer

Newton's Third Law of Motion describes action-reaction force pairs.

Fundamentals of Engineering Practice Test