Forces and Motion

What is the formula to calculate net force?

• Net force = Sum of all forces

• Net force = Mass x Acceleration

• Net force = Force / Mass

• Net force = Distance / Time

Tags

NGSS.MS-PS2-2

According to Newton's first law of motion, an object at rest will stay at rest unless acted upon by what?

• external force

• inertia

• friction

• gravity

What is the SI unit of force?

• Newton (N)

• Second (s)

• Meter (m)

• Kilogram (kg)

Friction is a force that opposes what?

• acceleration

• motion

• gravity

• energy

What is the acceleration due to gravity on Earth?

• 9.8 m/s^2

• 20.0 m/s^2

• 12.5 m/s^2

• 5.0 m/s^2

What is the tendency of an object to resist changes in its motion called?

• friction

• inertia

• acceleration

• momentum

What is the relationship between mass and inertia?

• Mass and inertia are directly proportional.

• Inertia is unrelated to mass.

• Mass has no effect on inertia.

• Mass and inertia are inversely proportional.

What is the net force acting on an object in equilibrium?

• positive

• negative

• undefined

• zero

According to Newton's second law of motion, what is the formula to calculate force?

• F = mv

• F = ma

• F = ma^2

• F = m^2a

What is the force that pulls objects towards the center of the Earth called?

• friction

• gravity

• magnetism

• inertia

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5