NAUTICAL SCIENCE 5.1 MOTION, FORCE AND AERODYNAMICS- Test

What does Newton’s Second Law of Motion state?

• The acceleration of a body is directly proportional to the force acting upon it
• A body in motion tends to remain in motion in a straight line unless acted on by outside forces
• For every action, there is an equal but opposite reaction
• An object at rest remains at rest, or if in motion, remains at a constant velocity unless acted on by a net external force

How is Newton’s Second law of motion mathematically expressed?

• F=ma
• W=Fs
• M L2 t-2
• f = µN

What is the change in velocity per unit of time?

• Mass
• Gravity
• Acceleration
• Friction

What is the quantity of material contained in a body?

• Mass
• Gravity
• Acceleration
• Friction

What method is used by scientists in their investigations?

• Experiment
• Survey Methodology
• Case Study
• Scientific Method

What occurs when a force acts through a distance?

• Friction
• Acceleration
• Work
• Velocity

___________ are often used to express the speed of missiles and other high-speed aircraft.

• Knots
• Mass
• Miles
• Mach Numbers

Gravity is known as…

• One force that all moving earthbound objects are subject to
• The downward force applied against a body
• The total energy in any isolated system
• Power or energy exerted against a body in a given direction

Friction is described as…

• One force that all moving earthbound objects are subject to
• The downward force applied against a body
• The total energy in any isolated system
• Power or energy exerted against a body in a given direction

What is the English unit for measuring work?

• Mass
• Horsepower
• Force
• Newtons