Physics Dynamics Review

What is SI units for force ?

• Grams g()
• Hectogram (Hg)
• Newtons (N)
• Meters (m)

Which of the following laws state that for every action there is an equal and opposite reaction?

• The law of conservation of momentum
• Newton's 1st Law of Motion
• Newton's 2nd Law of Motion
• Newton's 3rd Law of Motion

Tags

NGSS.MS-PS2-1

What happens to the inertia of an object if the mass increases?

• It decreases.
• It remains constant.
• It increases then decreases
• It increases

An object at rest will stay at rest, and an object in motion will stay in motion at constant velocity unless acted upon by an unbalanced force

• Newton's First Law
• Newton's Second Law
• Newton's Third Law

A leaf falls from a tree and lands on the sidewalk. Identify an action-reaction pair in this situation.

• The tree exerts a force on the leaf; the sidewalk exerts a force on the leaf.

• The leaf exerts a force on the sidewalk; the sidewalk exerts a force on the leaf.

• The leaf exerts a force on the tree; the sidewalk exerts a force on the leaf.

• The leaf exerts a force on the sidewalk; the tree exerts a force on the leaf.

Tags

NGSS.MS-PS2-4

A newton is equivalent to which of the following quantities?

• kg

• kg·m/s

• kg·m/s²

• kg·(m/s)²

The diagram represents an object being held at rest on a frictionless incline. The net force is equal to

• zero
• normal force
• weight
• friction

Tags

NGSS.HS-PS2-1

What is the minimum number of forces that must act on a system in order to have an unbalanced force on the system?

• 1 force

• 2 forces

• 0 force

• 3 forces

Tags

NGSS.HS-PS2-1

What is the minimum number of forces that must act on a system in order to have a balanced force on the system?

• 1 force

• 2 forces

• 3 forces

• 0 force

According to Newton’s second law, doubling a net force on a system of constant mass will double...

• the mass

• the acceleration

• the force

• the magnitude

Tags

NGSS.MS-PS2-2