Quiz on Laws of Motion

What is required to put a stationary body in motion?

• Friction

• Mass

• Inertia

• Force

According to Aristotle, what is needed to keep a body in motion?

• Gravity alone

• An external force

• No force is needed

• Friction

What does Galileo's law of inertia state?

• A body requires constant force to stay in motion

• A body will accelerate indefinitely

• A body at rest will stay at rest unless acted upon

• A body in motion will stop without force

What is the first law of motion formulated by Newton?

• Force equals mass times acceleration

• Every body continues in its state of rest or uniform motion unless acted upon

• Momentum is conserved in a closed system

• For every action, there is an equal and opposite reaction

What is the unit of force defined in the text?

• Joule

• Kilogram

• Pascal

• Newton

What does the second law of motion relate to?

• The relationship between mass and velocity

• The relationship between energy and work

• The relationship between force and acceleration

• The relationship between speed and distance

What is impulse defined as?

• Force times distance

• Acceleration times time

• Force times time

• Mass times velocity

According to Newton's third law, what happens for every action?

• There is a greater reaction

• There is an equal and opposite reaction

• There is no reaction

• The action is always stronger

What is the primary flaw in Aristotle's view of motion?

• He did not consider inertia

• He ignored gravity

• He thought external forces are always needed to maintain motion

• He believed in frictionless motion

What does inertia refer to?

• The mass of an object

• The force required to move an object

• The resistance to change in motion

• The tendency of a body to change its state of motion