Newtons Law & Moment of Inertia

What is inertia?

• The ability of a body to increase its speed

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

• The ability of a body to float in water

• The force applied by a body in motion

How is inertia related to the mass of an object?

• The lighter the mass, the greater its inertia

• Mass does not affect inertia

• The heavier the mass, the greater its inertia

• Only objects with no mass have inertia

What does a cyclist with a higher mass need to do to start moving compared to a lighter cyclist?

• Apply less force

• Apply the same force

• Apply more force

• Use a different kind of bicycle

Which of the following is an example of a force produced internally?

• Gravitational force

• Frictional force

• Contraction of muscles

• Air resistance

How are forces measured?

• In kilograms

• In meters per second squared

• In Newtons

• In joules

What does frictional force involve?

• Only interaction between two surfaces

• Only air or water resistance

• Both interaction between two surfaces and air/water resistance

• Neither interaction between surfaces nor air/water resistance

What does Newton's First Law, also known as the Law of Inertia, state about a body at rest or in motion?

• A) A body at rest or in motion will change its state unless an external force is applied.

• B) A body will remain at rest or in constant motion unless acted upon by an external force.

• C) A body at rest or in motion does not require any force to change its state.

• D) A body will always move towards a state of rest unless continuously acted upon.

According to Newton's First Law, what happens to a golf ball when hit by a golf club?

• A) The golf ball will immediately stop moving.

• B) The golf ball will change direction due to gravity.

• C) The golf ball will remain still unless a force is applied.

• D) The golf ball will continue to move at a constant velocity unless another force acts on it.

According to Newton's Second Law, what happens when the same force is applied to a lighter object compared to a heavier one?

• The lighter object will accelerate slower than the heavier object.

• The lighter object will not accelerate.

• The lighter object will accelerate faster than the heavier object.

• The acceleration of both objects will be the same.

What is the formula for Newton's Second Law of Motion?