General Physics 1 Quiz 2.1

What is a force?

• A measure of mass

• A push or pull exerted by an object

• A type of motion

• A type of energy

Which of the following is a noncontact force?

• Frictional force

• Normal force

• Gravitational force

• Tension force

What does Newton's first law of motion state?

• Force equals mass times acceleration

• An object in motion will stay in motion unless acted upon

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

• A body at rest will remain at rest unless acted upon by an external force

What is the SI unit of force?

• Kilogram

• Newton

• Pound

• Dyne

What is the relationship between mass and inertia?

• Mass is independent of inertia

• Greater mass means greater inertia

• Inertia is a measure of weight

• Inertia decreases with mass

What does the second law of motion describe?

• The relationship between force and acceleration

• The concept of equilibrium

• The behavior of noncontact forces

• The nature of friction

What is the formula for weight?

• W = ma

• W = F/m

• W = mg

• W = m/a

What is static friction?

• Friction that opposes motion

• Friction that occurs when an object is moving

• Friction that is always less than kinetic friction

• Friction that acts on a stationary object

What is the angle of repose?

• The angle of a vertical wall

• The angle of a banked curve

• The angle at which an object starts to slide down a slope

• The angle of a flat surface

What does the impulse-momentum theorem relate?

• Friction and motion

• Force and mass

• Impulse and change in momentum

• Acceleration and velocity